Ouvrages édités à titre de seul éditeur ou en collaboration
2011
XXIIIrd congress of the International Society of Biomechanics - ISB2011 Conference book - Programme & Abstracts
Van Sint Jan, S., Feipel, V., Aerenhouts, D., Baeyens, J., Carpentier, A., Cattrysse, E., Clarys, J., Duchateau, J., Guissard, N., Leloup, T., Provyn, S., Rooze, M., Scafoglieri, A., Schuind, F., Van Roy, P., & Warzée, N. (2011). XXIIIrd congress of the International Society of Biomechanics - ISB2011 Conference book - Programme & Abstracts.
ISB 2011 Conference book
Van Sint Jan, S., Feipel, V., Aerenhouts, D., Baeyens, J., Carpentier, A., Cattrysse, E., Clarys, J., Duchateau, J., Guissard, N., Leloup, T., Provyn, S., Rooze, M., Scafoglieri, A., Schuind, F., Van Roy, P., & Warzée, N. (2011). ISB 2011 Conference book.
2005
3D Reconstruction of the Necropolis in Itanos, Crete
Viviers, D., Milojevic, D., & Warzée, N. (2005). 3D Reconstruction of the Necropolis in Itanos, Crete: Proceedings of the 10th International Conference « Cultural Heritage and New Technologies. Vienne.
Communications publiées lors de congrès ou colloques nationaux et internationaux
A paraître
Robust Structured Light Pattern for Use with a Hologram in 3D Endoscopy
Mertens, B., De Leener, B., Debeir, O., Beumier, C. M., Lambert, P., Delchambre, A., et al. (2012). Robust Structured Light Pattern for Use with a Hologram in 3D Endoscopy. In Proceedings of the 2012 International Symposium on Optomechatronic Technologies (ISOT'12) IEEE.This paper introduces a novel structured light pattern designed to be compatible with the hologram projection. Here is proposed to use a De Bruijn-based sequence and a combination of continuous and dashed lines for the pattern. Dashed lines are coded by a combination of their period and of their duty cycles. It provides 16 different lines which limits to two the required number of lines for identification. The segmentation has been made easier by inserting continuous lines between two dashed lines. As required by the use of holograms, the sequence has been adapted by making it symmetric. It has been improved by guaranteeing a hamming distance equal to two for contiguous lines. The implementation on a virtual model has shown that a subpixel accuracy has been achieved. The aim of this pattern is to be used in 3D endoscopy
AI Guided Panoramic Image Reconstruction
Zhang, Z., Schenkel, A., & Debeir, O. (2021). AI Guided Panoramic Image Reconstruction. Proceedings of the 25th International Conference on Cultural Heritage and New Technologies 2020 (CHNT025, 2020) CHNT25 25th Conference on Cultural Heritage and New Technologies(Nov. 2020: Vienna, Austria)
2024
Training Data Selection to Improve Multi-class Instance Segmentation in Digital Pathology
Galvez Jiménez, L., Franzin, A., & Decaestecker, C. (2024). Training Data Selection to Improve Multi-class Instance Segmentation in Digital Pathology. In Proceedings of the 2023 10th International Conference on Bioinformatics Research and Applications (p. 27-33) ACM.https://dipot.ulb.ac.be/dspace/bitstream/2013/369376/3/ICBRA_conference_final.pdf
Finding the best channel for tissue segmentation in whole-slide images
Foucart, A., Elskens, A., Debeir, O., & Decaestecker, C. (2024). Finding the best channel for tissue segmentation in whole-slide images. Proceedings of the 19th International Symposium on Medical Information Processing and Analysis SIPAIM(15-17/11/2023: Mexico City, Mexico) doi:10.1109/SIPAIM56729.2023.10373416In digital pathology, segmentation between tissue and glass slide is a very common pre-processing step in image processing pipelines. It is often presented as relatively trivial, and solved using ad-hoc heuristics that are not always precisely defined nor justified. Most tissue segmentation pipelines start by reducing the color image to a single-channel representation, grayscale being the most common. We show in this study that representations that focus on the colorfulness or entropy offer better separability between tissue and background, and lead to better results in simple thresholding pipelines.
https://dipot.ulb.ac.be/dspace/bitstream/2013/363134/3/SIPAIM23-Foucart-Manuscript.pdf
Assessing Local Descriptors for Feature-Based Registration of Whole-Slide Images
Elskens, A., Foucart, A., Zindy, E., Debeir, O., & Decaestecker, C. (2024). Assessing Local Descriptors for Feature-Based Registration of Whole-Slide Images. Proceedings of the 19th International Symposium on Medical Information Processing and Analysis, SIPAIM(15-17/11/2023: Mexico City, Mexico) doi:10.1109/SIPAIM56729.2023.10373514Feature-based registration has become increasingly popular in digital pathology for achieving initial global alignment between image pairs. However, the selection of algorithms used in this approach is often not well-justified. Specifically, the choice of local feature descriptor is rarely, if ever, discussed in the context of digital pathology. The majority of feature-based whole-slide image registration methods rely on the SIFT descriptor. In this study, we demonstrate that the choice of descriptor significantly influences the quality of registration results and that the BRIEF descriptor captures more optimal information for histological image registration.
https://dipot.ulb.ac.be/dspace/bitstream/2013/363969/3/SIPAIM23_Elskens-Manuscript.pdf
2023
Automatic detection of windows reflection or transparency pollution in TLS acquisitions
Badalyan, E., Schenkel, A., & Debeir, O. (2023). Automatic detection of windows reflection or transparency pollution in TLS acquisitions. EUROGRAPHICS Workshop on Graphics and Cultural Heritage (2023) (4-6 Sept: Salento, Italy)
Fibroblast Activation Protein Inhibitor, a Promising Radiotracer inFibrogenesis
Lavis, P., Pingitore, J., Doumont, G., Gabaret, A., Van Simaeys, G., Lacroix, S., Passon, N., Van Heymbeek, C., De Maeseneire, C., Huaux, F., Decaestecker, C., Salmon, I., Cardozo, A. K., Goldman, S., & Bondue, B. (2023). Fibroblast Activation Protein Inhibitor, a Promising Radiotracer inFibrogenesis. American journal of respiratory and critical care medicine,(207), A4704. doi:https://doi.org/10.1164/ajrccm-conference.2023.207.1_MeetingAbstracts.A4704Rationale: Idiopathic pulmonary fibrosis (IPF) is a chronic and irreversible interstitial lung diseasefor which biomarker of the fibrotic activity of the disease are lacking. Fibroblast activation protein-α(FAP) is a marker of activated fibroblasts. The development of quinoline-based PET tracers that actas FAP inhibitors (FAPIs) demonstrated promising results in oncology with a high and selectivetumor uptake. In the present study, we evaluated the potential role of FAPI as a biomarker of lungfibrogenesis. Methods: The lung uptake of FAPI and its kinetic was assessed in a mouse model ofpulmonary fibrosis. Thus, intratracheal instillation of bleomycin (0.02U/mouse) was performed onC56BL/6 mice. Control mice received an intratracheal instillation of NaCl 0.9%. FAPI was providedby SOFIE (Totowa, USA) and the radiotracer 18F-FAPI was produced in the department of NuclearMedicine of Erasme Hospital. PET/CT imaging were determined at different timepoints (days 3, 10,16 and 28) after the instillation of bleomycin. A time course of uptake of the radiotracer wasevaluated. The results are presented as the mean standardized uptake value (SUV mean) in thelungs and the calculation of a lung-to-muscle ratio (LMR). To correlate with the PET scan results, theextent of fibrosis was assessed by measuring lung content of hydroxyproline and by evaluating theAshcroft modified scale. Results: The optimal imaging window was determined between 40 and 90minutes after radiotracer injection. Bleomycin-treated mice presented a significantly higher uptakeof 18F-FAPI (both SUV mean and LMR) at days 10 and 16 after instillation as compared to controlmice (p < 0.01). No significant statistical difference was observed at day 3 and day 28 afterinstillation. At day 10 and day 16, a strong correlation between 18F-FAPI uptake and hydroxyprolinelung content was observed, as well as a moderate correlation with the Ashcroft modified score.Conclusions: Our results suggest that FAPI constitutes a promising marker of fibrogenesis whoseexpression can be assessed by PET/CT imaging in a mouse model of lung fibrosis. Interestingly, nosignificant increase of lung FAPI uptake was observed during the initial inflammatory phase afterbleomycin instillation as well as at the later stage when fibrotic changes are established and nolonger grow. 18F-FAPi PET/CT could be a useful tool for preclinical evaluation of antifibrotic drugsand further studies should assess its value in patients with IPF.
https://dipot.ulb.ac.be/dspace/bitstream/2013/362928/3/lavis2023-FAP-inhibitor-radiotracer-in-fibrogenesis.pdf
A Quantitative Evaluation of Trademark Search Engines' Performances through Large-Scale Statistical Analysis
Vandamme, T., Cabay, J., & Debeir, O. (2023). A Quantitative Evaluation of Trademark Search Engines' Performances through Large-Scale Statistical Analysis. In Proceedings of the Nineteenth International Conference on Artificial Intelligence and Law (ICAIL 2023): June 19-23, 2023, Braga, Portugal, (pp. 343-350) New York (NY, USA): ACM.Intellectual Property Offices now offer their users trademark search engines to help them identify earlier trademarks in their register. Such tools have proven to be extremely useful given the growing number of trademarks registered but have never been subjected to thorough evaluation, despite the necessity for openness and accountability in justice systems. Additionally, their performance is unknown, in particular the reliability of their results pertaining to applicable legal rules. In fact, their "black box nature" makes automatic and at-scale evaluation hard to perform directly, which is why we propose a novel method for evaluating their performance using settled case-law for ground truth, and at-scale analysis. Based on this methodology, we evidence the performance for two such systems, the Benelux Office of Intellectual Property (BOIP) and European Union Intellectual Property Office (EUIPO), using 8 126 opposition division decisions from the EUIPO. We show important disparities between the two systems, along with surprisingly good results for EUIPO's system.
https://dipot.ulb.ac.be/dspace/bitstream/2013/359739/3/ICAIL2023.pdf
2022
Extracting Microseismic Ground Motion From Legacy Seismograms
De Plaen, R. S. M., Lecocq, T., Lemenkova, P., Debeir, O., Ardhuin, F., & De Carlo, M. (2022). Extracting Microseismic Ground Motion From Legacy Seismograms. In Proceedings of the Third European Conference on Earthquake Engineering and Seismology (1 ed., pp. 3507-3513) Bucharest, Romania: Conspress. doi:10.5281/zenodo.7064711Before digital recordings became available in the 1970s, the ground motion was recorded using ink on white paper, scratching black-smoked paper, or light on photographic paper. While those analog seismic records offer unique continuous observations from the last century, most of them are now stacked and archived in boxes and potentially exposed to physical decay and permanent loss. To preserve those records and ultimately subject them to modern methods of analysis, it is time-sensitive to scan and digitize them. Here, we worked on a method for automatic digitization of paper seismograms using image processing and machine learning to extract microseismic ground-motion periods and amplitudes. We implemented the method on legacy data recorded at the Royal Observatory of Belgium to extract power spectral densities for major storms during the last century, which are compared with modeled microseisms levels computed using a numerical ocean wave model. This further shows how digitizing analog seismograms does not only preserve the scientific legacy but also makes new research possible by bringing analog data to the digital age.
https://dipot.ulb.ac.be/dspace/bitstream/2013/349495/3/De_Plaen_et_al_Proc_3ECEES_2022.pdf
2021
Processing multi-expert annotations in digital pathology: A study of the Gleason2019 challenge
Foucart, A., Debeir, O., & Decaestecker, C. (2021). Processing multi-expert annotations in digital pathology: A study of the Gleason2019 challenge. Proc. SPIE 12088, 17th International Symposium on Medical Information Processing and Analysis. Vol. 120880X International Symposium on Medical Information Processing and Analysis(17th: Campinas, Brazil). doi:10.1117/12.2604307https://dipot.ulb.ac.be/dspace/bitstream/2013/353666/3/FOUCART21-Gleason2019.pdf
3D scanner colorization taking into account lighting problems (shadows, overexposures, lighting changes, and lack of light)
Schenkel, A., Guillaume, H.-L., & Debeir, O. (2021). 3D scanner colorization taking into account lighting problems (shadows, overexposures, lighting changes, and lack of light). Proceedings of the 24th International Conference on Cultural Heritage and New Technologies 2019 (CHNT024, 2019) CHNT24 24th Conference on Cultural Heritage and New Technologies(Nov. 2019: Vienna, Austria)
2020
Thermal Image Super-Resolution Challenge - PBVS 2020
Rivadeneira, R. R., Sappa, A., Vintimilla, B. B., Guo, L., Hou, J., Mehri, A., Ardakani, P. B., Patel, H., Chudasama, V., Prajapati, K., Upla, K. K., Ramachandra, R., Raja, K., Busch, C., Almasri, F., Debeir, O., Nathan, S., Kansal, P., Gutierrez, N., Bardia, M., & Beksi, W. W. (2020). Thermal Image Super-Resolution Challenge - PBVS 2020. doi:10.1109/CVPRW50498.2020.00056This paper summarizes the top contributions to the first challenge on thermal image super-resolution (TISR), which was organized as part of the Perception Beyond the Visible Spectrum (PBVS) 2020 workshop. In this challenge, a novel thermal image dataset is considered together with state- of-the-art approaches evaluated under a common framework. The dataset used in the challenge consists of 1021 thermal images, obtained from three distinct thermal cameras at different resolutions (low-resolution, mid-resolution, and high-resolution), resulting in a total of 3063 thermal images. From each resolution, 951 images are used for training and 50 for testing while the 20 remaining images are used for two proposed evaluations. The first evaluation consists of downsampling the low-resolution, mid-resolution, and high-resolution thermal images by ×2, ×3 and ×4 respectively, and comparing their super-resolution results with the corresponding ground truth images. The second evaluation is comprised of obtaining the ×2 super-resolution from a given mid-resolution thermal image and comparing it with the corresponding semi-registered high- resolution thermal image. Out of 51 registered participants, 6 teams reached the final validation phase.
https://dipot.ulb.ac.be/dspace/bitstream/2013/317693/3/PBVS_2020_CVPRW_2020.pdf
3D digitization of the Brussels City Hall and the medieval archangel Michael wind vane: architectural and archaeological exploitation
Schenkel, A., Ercek, R., & Debeir, O. (2020). 3D digitization of the Brussels City Hall and the medieval archangel Michael wind vane: architectural and archaeological exploitation. Proceedings of the 23th International Conference on Cultural Heritage and New Technologies 2018 (CHNT023, 2018) CHNT23 23th Conference on Cultural Heritage and New Technologies(Nov. 2018: Vienna, Austria)In order to make the architectural and archaeological study, the roofs, the courtyard and the facades of the Brussels City Hall were digitized with a 3D scanner, coupled with photographic acquisitions. Various elements, such as the main portal tympanum and the archangel Michael, - an exceptionally preserved 5-metre-high medieval metal wind vane that adorned the top of the 96-metre-high tower -, were also digitized in high definition. Numerical surveys shows different colorimetric (variation of colorimetry related to the changes in natural lighting) and geometric defects (erroneous points related to the passages of persons and vehicles, flying points or noises inherent to the acquisition device). A specific and automatic processing pipeline has therefore been developed and applied to correct all this problems. Given the amount of data and operations for creating plans, a software has been developed to present the data as an enriched 2D representation. This is similar to orthophotos complemented by the possibility to navigate in the depth and to vary the rendering mode (color, intensity, orientation ...), to highlight elements (surfaces, edges ...) hardly visible in simple color mode of rendering. Its functionalities allowed the drawing of very precise elevations and to generate projection images in high definition of all buildings parts and also of the archangel statue. Indeed, this survey allowed to draw the entire statue to the real scale and in a completely proportioned way. Archeologists have been able to distinguish the main work components, and they better understand the articulations between its constitutive parts and the various transformations made to the metal statue over the centuries.
https://dipot.ulb.ac.be/dspace/bitstream/2013/285626/3/CHNT23_AS_RE_OD.pdfhttps://dipot.ulb.ac.be/dspace/bitstream/2013/285626/4/eBook_CHNT23_Schenkel.pdf
2019
Data augmentation for training deep regression for in vitro cell detection
Debeir, O., & Decaestecker, C. (2019). Data augmentation for training deep regression for in vitro cell detection. Fifth International Conference on Advances in Biomedical Engineering (ICABME) (pp. 1--3) International Conference on Advances in Biomedical Engineering (ICABME)(October 17-19, 2019: Lebanon). doi:10.1109/ICABME47164.2019.8940275https://dipot.ulb.ac.be/dspace/bitstream/2013/298616/3/tracking2019b.pdf
SNOW: Semi-Supervised, NOisy and/or Weak Data for Deep Learning in Digital Pathology
Foucart, A., Debeir, O., & Decaestecker, C. (2019). SNOW: Semi-Supervised, NOisy and/or Weak Data for Deep Learning in Digital Pathology. In 2019 IEEE 16th International Symposium on Biomedical Imaging (ISBI 2019) (pp. 1869-1872) IEEE. doi:10.1109/ISBI.2019.8759545Digital pathology produces a lot of images. For machine learning applications, these images need to be annotated, which can be complex and time consuming. Therefore, outside of a few benchmark datasets, real-world applications often rely on data with scarce or unreliable annotations. Inthis paper, we quantitatively analyze how different types of perturbations influence the results of a typical deep learning algorithm by artificially weakening the annotations of a benchmark biomedical dataset. We use classical machine learning paradigms (semi-supervised, noisy and weak learning) adapted to deep learning to try to counteract those effects, and analyze the effectiveness of these methods in addressing different types of weakness.
https://dipot.ulb.ac.be/dspace/bitstream/2013/286269/3/Paper_ISBI2019_final.pdf
2018
Artifact Identification in Digital Pathology from Weak and Noisy Supervision with Deep Residual Networks
Foucart, A., Debeir, O., & Decaestecker, C. (2018). Artifact Identification in Digital Pathology from Weak and Noisy Supervision with Deep Residual Networks. The 4th International Conference on Cloud Computing Technologies and Application (CloudTech'18)(Novembre 26-28, 2018: Brussels, Belgium) doi:10.1109/CloudTech.2018.8713350https://dipot.ulb.ac.be/dspace/bitstream/2013/286814/3/FOUCART18-ArtifactIdentification.pdf
RGB Guided Thermal Super-Resolution Enhancement
Almasri, F., & Debeir, O. (2018). RGB Guided Thermal Super-Resolution Enhancement. In 4th International Conference on Cloud Computing Technologies and Applications (Cloudtech) 2018. (IEEE Xplore). IEEE. doi:10.1109/CloudTech.2018.8713356In visual surveillance and security problems, objects can occur in different conditions of illumination and occlusion, therefore thermal images have become a major tool in a large variety of applications. By the reason of their high cost compared to their visual (RGB) counterpart, thermal sensors are used in low-resolution and in low contrast which introduces the necessity to obtain a higher resolution version. In this work, we propose a deep learning model by which to enhance the thermal image resolution guided by RGB images using GAN based model. The results indicate an improvement in resolution enhancement using RGB guided thermal super-resolution models compared to the classical single thermal super-resolution approach.
Multimodal Sensor Fusion In Single Thermal image Super-Resolution
Almasri, F., & Debeir, O. (2018). Multimodal Sensor Fusion In Single Thermal image Super-Resolution. In 14th Asian Conference on Computer Vision (ACCV) 2018. (Lecture Notes in Computer Science (LNCS), VI). Springer. doi:10.1007/978-3-030-21074-8With the fast growth in the visual surveillance and security sectors, thermal infrared images have become increasingly necessary ina large variety of industrial applications. This is true even though IR sensors are still more expensive than their RGB counterpart having the same resolution. In this paper, we propose a deep learning solution to enhance the thermal image resolution. The following results are given:(I) Introduction of a multimodal, visual-thermal fusion model that ad-dresses thermal image super-resolution, via integrating high-frequency information from the visual image.(II) Investigation of different net-work architecture schemes in the literature, their up-sampling methods, learning procedures, and their optimization functions by showing their beneficial contribution to the super-resolution problem.(III) A bench-mark ULB17-VT dataset that contains thermal images and their visual images counterpart is presented.(IV) Presentation of a qualitative evaluation of a large test set with 58 samples and 22 raters which shows that our proposed model performs better against state-of-the-arts.
https://dipot.ulb.ac.be/dspace/bitstream/2013/288193/3/1812.09276.pdf
Numérisation 3D de l'Hôtel de Ville de Bruxelles et de la statue du saint Michel : exploitation architecturale et archéologique
Schenkel, A., Ercek, R., & Debeir, O. (2018). Numérisation 3D de l'Hôtel de Ville de Bruxelles et de la statue du saint Michel : exploitation architecturale et archéologique. In Studia Bruxellae: Vol. 2018/1 (N° 12) (pp. 29-36) Musées et Archives de la Ville de Bruxelles.https://dipot.ulb.ac.be/dspace/bitstream/2013/282906/3/STUD_012_0029.pdf
2017
A Graph Based Algorithm for Star Recognition
Jiang, D., Zhang, K., & Debeir, O. (2017). A Graph Based Algorithm for Star Recognition. 2017 IEEE 2nd Information Technology, Networking, Electronic and Automation Control Conference (ITNEC) (pp. 159-162). doi:10.1109/ITNEC.2017.8284929https://dipot.ulb.ac.be/dspace/bitstream/2013/271219/3/jiang2017.pdf
Analysis of abdominal movement with Phase Optical Flow: Application to Diffusion imaging.
Hahn, S., Gérard, M., Damien, D.-S., Absil, J., Debeir, O., & Metens, T. (2017). Analysis of abdominal movement with Phase Optical Flow: Application to Diffusion imaging. ISMRM: Magnetic Resonance in Medicine 25th Annual Meeting(22-27 April 2017: Hawai'i Convention Center 1801 Kalakaua Ave., Honolulu, HI 96815 USA)https://dipot.ulb.ac.be/dspace/bitstream/2013/263961/3/ismrm2017.pdf
2016
Image normalization for quantitative immunohistochemistry in digital pathology
Van Eycke, Y.-R., Allard, J., Derock, M., Salmon, I., Debeir, O., & Decaestecker, C. (2016). Image normalization for quantitative immunohistochemistry in digital pathology. In 2016 IEEE 13th International Symposium on Biomedical Imaging (ISBI) (pp. 795 - 798) IEEE. doi:10.1109/ISBI.2016.7493386We propose to adapt to immunohistochemistry (IHC) some methods proposed to normalize images from histological slices stained with hematoxylin-eosin (H&E). Our final aim is to provide a coherent quantitative characterization of IHC biomarkers across different IHC batches with possible staining variations. In contrast to H&E, IHC staining strongly varies with the tissue analyzed and the protein targeted, making image normalization challenging. To solve this problem, we added in each IHC batch a slice from a reference tissue microarray (TMA) and then digitalized it to establish an inter-batch normalization transform. A comparison of two methods adapted to the specificity of IHC-stained slides evidences some normalization requirements to make valid IHC biomarker quantification across different staining batches.
2015
Amplified spontaneous emission injection into an optical fiber with the aid of a nematicon
Bolis, S., Debeir, O., Beeckman, J., & Kockaert, P. (2015). Amplified spontaneous emission injection into an optical fiber with the aid of a nematicon. Proceedings Symposium IEEE Photonics Society Benelux, 2015, Brussels, Belgium 20th Annual Symposium of the IEEE Photonics Benelux Chapter(26-27 Novembre 2016: Brussels, Belgium)Amplified Spontaneous Emission (ASE) has become popular for applications like spectroscopy, fiber sensors and imaging that require incoherent light. In our setup ASE is generated in a dye-doped nematic liquid crystal cell and it is then collected into an optical fiber to integrate into the device. We demonstrate that, generating a nematicon from the same fiber, the ASE collection efficiency is increased of almost one order of magnitude thanks to the wave-guiding action of the nematicon that induces the injection into the fiber. Moreover the collected emission is highly linearly polarized parallel to the direction of the liquid crystal director
https://dipot.ulb.ac.be/dspace/bitstream/2013/233182/3/IEEE_photonics-BeNeLux-soc-Symposium2015.pdf
Comparison of Normalized Transfer Functions for Fast Blending-based Color Correction of Scans Acquired under Natural Conditions
Schenkel, A., & Debeir, O. (2015). Comparison of Normalized Transfer Functions for Fast Blending-based Color Correction of Scans Acquired under Natural Conditions. Proceedings of the Digital Heritage International Congress 2015. Vol. 1 (p. 4) Digital Heritage International Congress 2015(28 sep - 2 oct, 2015: Grenada, Spain). doi:10.1109/DigitalHeritage.2015.7413851https://dipot.ulb.ac.be/dspace/bitstream/2013/246493/3/DigitalHeritage2015_submission_45.pdf
High-Throughput Analysis of Tissue-Based Biomarkers in Digital Pathology
Van Eycke, Y.-R., Debeir, O., Verset, L., Demetter, P., Salmon, I., & Decaestecker, C. (2015). High-Throughput Analysis of Tissue-Based Biomarkers in Digital Pathology. In EMBC'15 Proceedings (IEEE Engineering in Medicine and Biology Society) (pp. 7732 - 7735) IEEE. doi:10.1109/EMBC.2015.7320184
Real-time Fullscale Model Colorization and Global Color Quality Evaluation for Rapid Scanning in Uncontrolled Environment
Schenkel, A., & Debeir, O. (2015). Real-time Fullscale Model Colorization and Global Color Quality Evaluation for Rapid Scanning in Uncontrolled Environment. Proceedings of the 36th WIC Symposium on Information Theory in the Benelux and the 5th Joint WIC/IEEE Symposium on Information Theory and Signal Processing in the Benelux (pp. 20-25) 36th WIC Symposium on Information Theory in the Benelux(36: May 06-07, 2015: Brussels, Belgium).https://dipot.ulb.ac.be/dspace/bitstream/2013/246503/3/WIC2015_May2015.pdf
Automated Tissue Microarray Image Processing in Digital Pathology.
Van Eycke, Y.-R., Debeir, O., Verset, L., Demetter, P., Salmon, I., & Decaestecker, C. (2015). Automated Tissue Microarray Image Processing in Digital Pathology. In Proceedings of the Fifth joint WIC/IEEE SP Symposium on Information Theory and Signal Processing in the Benelux. ((8 p.)). IEEE.https://dipot.ulb.ac.be/dspace/bitstream/2013/199489/1/04-VanEycke.pdf
2014
Multi-sensor data fusion for hand tracking using Kinect and leap motion
Penelle, B., & Debeir, O. (2014). Multi-sensor data fusion for hand tracking using Kinect and leap motion. Laval Virtual VRIC'14 (9-11 Apr. 2014: Laval, France)https://dipot.ulb.ac.be/dspace/bitstream/2013/163271/3/penelle2014.pdf
2013
Human Motion Tracking for Rehabilitation using Depth Images and Particle Filter Optimization
Penelle, B., & Debeir, O. (2013). Human Motion Tracking for Rehabilitation using Depth Images and Particle Filter Optimization. In ACM SIGGRAPH conference on Motion in Games 2013 (p. 1) ACM New York, NY, USA.https://dipot.ulb.ac.be/dspace/bitstream/2013/153314/1/poster_62.pdf
Fast Color Correction for Rapid Scanning in Uncontrolled Environment
Schenkel, A., Warzée, N., & Debeir, O. (2013). Fast Color Correction for Rapid Scanning in Uncontrolled Environment. Proceedings of the Digital Heritage International Congress 2013. Vol. 1 (p. 413) Digital Heritage International Congress 2013(28 Oct. - 1 Nov. 2013: Marseille, France).https://dipot.ulb.ac.be/dspace/bitstream/2013/153333/1/DH2013_Aug2013_FastColorCorrection.pdf
Human motion tracking for rehabilitation using depth images and particle filter optimization
Penelle, B., & Debeir, O. (2013). Human motion tracking for rehabilitation using depth images and particle filter optimization. 2nd International Conference on Advances in Biomedical Engineering (ICABME) (pp. 211 - 214) International Conference on Advances in Biomedical Engineering (ICABME)(11-13 Sept. 2013: Tripoli, Lebanon). doi:10.1109/ICABME.2013.6648885The algorithm presented here allows the motion tracking of a human subject performing rehabilitation exercises during physiotherapy. The motion is tracked by fitting a model into the observed data, which are depth images coming from one or multiple Kinect sensors. The model consists of a surface mesh morphologically close to the patient's body and an articulated skeleton. The mesh is deformed by linear blend skinning according to the pose of the skeleton. The optimization is performed by particle filtering. Thanks to the graphics pipeline and the computing capabilities of the GPU, our algorithm reaches execution speeds close to real time. When working offline with a model very close to the patient's morphology, the joints locations and rotations are estimated with an average accuracy respectively smaller than a few millimeters and a few degrees.
Hybrid method to extract striation features from ship noise spectrogram
Ren, Q., Debeir, O., & Hermand, J.-P. (2013). Hybrid method to extract striation features from ship noise spectrogram. In OCEANS - Bergen, 2013 MTS/IEEE IEEE. doi:10.1109/OCEANS-Bergen.2013.6608161https://dipot.ulb.ac.be/dspace/bitstream/2013/208288/3/rqy_0412.pdf
2012
Plans Extraction From Complex Buildings 3D Acquisitions
Schenkel, A., & Warzée, N. (2012). Plans Extraction From Complex Buildings 3D Acquisitions. Proceedings of the 17th International Conference on Cultural Heritage and New Technologies 2012 (CHNT 17, 2012) CHNT17 17th Conference on Cultural Heritage and New Technologies(Nov. 2012: Vienna, Austria)https://dipot.ulb.ac.be/dspace/bitstream/2013/153329/1/CHNT17_PlansExtraction.pdf
Robust structured light pattern for use with a hologram in 3D endoscopy
Mertens, B., De Leener, B., Debeir, O., Beumier, C. M., Lambert, P., & Delchambre, A. (2012). Robust structured light pattern for use with a hologram in 3D endoscopy. IEEE International Symposium on Optomechatronic Technologies (ISOT), 2012 (p. 6).
3D augmented reality applied to the treatment of neuropathic pain.
Penelle, B., Mouraux, D., Brassinne, E., Nonclercq, A., & Warzée, N. (2012). 3D augmented reality applied to the treatment of neuropathic pain. Proceedings of the 9th International Conference on Disability, Virtual Reality and Associated Technologies, ICDVRAT 2012 (10-12 Sept., 2012: Laval, France)https://dipot.ulb.ac.be/dspace/bitstream/2013/126850/1/ICDVRAT2012_S03N1_Penelle_etal.pdf
Unsupervised vehicle detection in traffic scene using distributed one class classifiers
Foucart, A., & Debeir, O. (2012). Unsupervised vehicle detection in traffic scene using distributed one class classifiers. International Symposium on signal, Image, Video and Communications (6 June 2012)https://dipot.ulb.ac.be/dspace/bitstream/2013/146728/1/isivc_conf.pdf
3D augmented reality applied to the treatment of neuropathic pain
Penelle, B., Mouraux, D., Brassinne, E., Tuna, T., Nonclercq, A., & Warzée, N. (2012). 3D augmented reality applied to the treatment of neuropathic pain.
2011
Tridimensional laser scanning to retrieve engineering site drawings. The experience of the Brussels Park Bunker rehabilitation project.
Schenkel, A., Ercek, R., Penelle, B., Hubrecht, A., Saroléa, T., & Warzée, N. (2011). Tridimensional laser scanning to retrieve engineering site drawings. The experience of the Brussels Park Bunker rehabilitation project. 2011 International Conference on 3D Imaging (IC3D 2011) International Conference on 3D Imaging (IC3D 2011)(Dec. 2011: Liège, Belgium)https://dipot.ulb.ac.be/dspace/bitstream/2013/148261/1/IC3D_Bunker_November2011.pdf
Geometrical 3D reconstruction using real-time RGB-D cameras
Penelle, B., Schenkel, A., & Warzée, N. (2011). Geometrical 3D reconstruction using real-time RGB-D cameras. 2011 International Conference on 3D Imaging (IC3D 2011) International Conference on 3D Imaging (IC3D 2011)(Dec. 2011: Liège, Belgium)https://dipot.ulb.ac.be/dspace/bitstream/2013/153323/1/IC3D_RGBDCamera_November2011_Penelle.pdf
Programme and Abstracts
Van Sint Jan, S., Feipel, V., Aerenhouts, D., Baeyens, J., Carpentier, A., Cattrysse, E., Clarys, J., Duchateau, J., Guissard, N., Leloup, T., Provyn, S., Rooze, M., Scafoglieri, A., Schuind, F., Van Roy, P., & Warzée, N. (2011). Programme and Abstracts. ISB 2011 Conference book XXIIIrd congress of the International Society of Biomechanics
2010
Detecting man-made structure changes to assist geographic data producers in planning their update strategy, ISPRS
Leignel, C., Caelen, O., Debeir, O., Hanson, E., Leloup, T., Simler, C., Beumier, C. M., Bontempi, G., Warzée, N., & Wolff, E. (2010). Detecting man-made structure changes to assist geographic data producers in planning their update strategy, ISPRS. Core Spatial Databases - Updating, Maintenance and Services - from Theory to Practise (15-17 March 2010: Haifa, Israel)
Computerised geometric analysis of a spire coming from a Gothic tabernacle
Laugerotte, C., & Warzée, N. (2010). Computerised geometric analysis of a spire coming from a Gothic tabernacle. Proceedings of CAA 2004 Computer Applications and Quantitative Methods to Archaeology Conference
Ki-67 hot-spots detection on glioblastoma tissue sections
Moles Lopez, X., Debeir, O., Maris, C., Roland, I., Salmon, I., & Decaestecker, C. (2010). Ki-67 hot-spots detection on glioblastoma tissue sections. In Proc. of the 2010 IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI 2010) (pp. pp 149-152) IEEE 2010.https://dipot.ulb.ac.be/dspace/bitstream/2013/70188/1/isbi2010mol0000149.pdf
The use of ORFEO toolbox in the context of map updating
Simler, C., Beumier, C. M., Leignel, C., Debeir, O., & Wolff, E. (2010). The use of ORFEO toolbox in the context of map updating. IEEE International Geoscience And Remote Sensing Symposium IGARSS 2010,(25-30 Juillet 2010: Honolulu,Hawaï)
2009
Reconstruction and Digitalization of an archaeological site, Itanos, Crete
Ercek, R., Viviers, D., & Warzée, N. (2009). Reconstruction and Digitalization of an archaeological site, Itanos, Crete. International Meeting on Archaeology and Graphic Informatics, ARQUEOLOGICA 2.0 (p. 6) (June 2009: Sevilla (Spain)).
A multi-features stereo vision system for road traffic analysis
Houben, Q., Tocino Diaz, J. C., Warzée, N., Debeir, O., & Czyz, J. (2009). A multi-features stereo vision system for road traffic analysis. VISAPP 2009 : International Conference on Computer Vision Theory and Applications VISAPP 2009(Lisboa, Portugal)This paper presents a method for counting and classifying vehicles on motorway. The system is based on a multi-camera system fixed over the road. Different features (maximum phase congruency and edges) are detected on the two images and matched together with local matching algorithm. The resulting 3D points cloud is processed by maximum spanning tree clustering algorithm to group the points into vehicle objects. Bounding boxes are defined for each detected object, giving an approximation of the vehicles 3D sizes. A complementary 2D quadrilateral detector has been developed to enhance the probability of matching features on vehicle exhibiting little texture such as long vehicles. The algorithm presented here was validated manually and gives 90% of good detection accuracy.
Weakened watershed assembly for remote sensing image segmentation and change detection
Debeir, O., Atoui, H., Simler, C., Warzée, N., & Wolff, E. (2009). Weakened watershed assembly for remote sensing image segmentation and change detection. VISAPP 2009 : International Conference on Computer Vision Theory and Applications VISAPP 2009https://dipot.ulb.ac.be/dspace/bitstream/2013/53011/1/VISAPP_2009_47_CR.pdf
A camera auto-calibration algorithm for realtime road traffic analysis
Tocino Diaz, J. C., Houben, Q., Czyz, J., Debeir, O., & Warzée, N. (2009). A camera auto-calibration algorithm for realtime road traffic analysis. VISAPP 2009 : International Conference on Computer Vision Theory and Applications VISAPP 2009(Lisboa, Portugal)This paper presents a new mono-camera system for traffic surveillance. It uses an original algorithm to obtain automatically a calibration pattern from road lane markings. Movement detection is done with a Σ - Δ background estimation which is a non linear method of background substraction based on comparison and elementary increment/decrement. Foreground and calibration data obtained allow to determine vehicles speed in an efficient manner. Finally, a new method to estimate the height of vehicles is presented.
https://dipot.ulb.ac.be/dspace/bitstream/2013/53005/1/VISAPP_2009_236_CR.pdf
3D Reconstruction and Digitalization of an archaeological site, Itanos, Crete
Ercek, R., Viviers, D., & Warzée, N. (2009). 3D Reconstruction and Digitalization of an archaeological site, Itanos, Crete. International Meeting on Archaeology and Graphic Informatics, Proceedings of ARQUEOLOGICA 2.0 (pp. 289-293).
Numérisation 3D de la grotte d'El Castillo (Puente Viesgo)
Warzée, N., Groenen, M., Rosoux, J., Debeir, O., Ercek, R., & Reichling, C. (2009). Numérisation 3D de la grotte d'El Castillo (Puente Viesgo). In R. Vergnieux & C. Delevoie (Eds.), Actes du colloque Virtual Retrospect 2007 (pp. 221-229). (Collection archéovision, 3). Ausonius.https://dipot.ulb.ac.be/dspace/bitstream/2013/71566/1/Groenen-Numerisation-3D.pdf
Influence d'images évocatrices et distractrices sur une tâche de jugement en acoustique des salles
Safin, S., Defays, A., Billon, A., Decaestecker, C., & Warzée, N. (2009). Influence d'images évocatrices et distractrices sur une tâche de jugement en acoustique des salles. In IHM 2009, ACM International Conference Proceeding Series (pp. 241-248) ACM.
Biomedical Engineer and Phlebologist
Van Dale, P., De Greef, A., Lenders, C., & Warzée, N. (2009). Biomedical Engineer and Phlebologist: A Midship Frame. International Angiology - Proceedings of the XVI World Congress of the Union Internationale de Phlebologie (p. 138) World Congress of the Union Internationale de Phlebologie(16: 31 August - 4 September 2009).
Comparaison et évaluation de méthodes de segmentation avec contrainte en vue d'une classification du bâti et des routes
Wolff, E., Debeir, O., Hanson, E., Leignel, C., Simler, C., Beumier, C. M., & Warzée, N. (2009). Comparaison et évaluation de méthodes de segmentation avec contrainte en vue d'une classification du bâti et des routes. Proceedings of JIGOT Informations Géographiques et Observation de la terre(Toulouse, France)
2008
Cells Tracking by Snakes
Perez-Careta, J., Avina-Cervantes, G., Torres-Cisneros, M., Ibarra-Manzano, O. M., Debeir, O., Aguilera-Gomez, E., Perez-Pantoja, E., & Negrete-Romero, G. (2008). Cells Tracking by Snakes. In G. Herrera Corral & L. M. Montaño Zetina (Eds.), Medical physics : tenth Mexican Symposium on Medical Physics (pp. 124-128). (AIP conference proceedings, 1032). Melville, N.Y.: American Institute of Physics. doi:10.1063/1.2979246In this paper, a cells detection method based on active contours is presented. Active contours or snakes are widely use in image segmentation and tracking problems. Traditionally, active contours initialization is performance manually, this method provides an automatic initialization based on cross correlation. Cell tracking based on active contours provide a faster method to performance this task to multitarget problem. External and internal forces on the image are computed to determinate the action area of the active contours, this task is performance by the Vector Field Convolution (VFC) algorithm.
Cell tracking by normalized cross-correlation with image processing
Perez-Careta, E., Torres-Cisneros, M., Debeir, O., Sanchez-Mondragon, J. J., Avina-Cervantes, G., Ibarra-Manzano, O. M., May-Arrioja, D. M., Perez-Pantoja, E., & Negrete-Romero, G. (2008). Cell tracking by normalized cross-correlation with image processing. In Digest of the IEEE-LEOS Summer Topical Meetings (pp. 43-44) Piscataway, N.J.: IEEE. doi:10.1109/LEOSST.2008.4590480Here, cell tracking task involves normalized cross correlation of the cell target and microscope images. The sensibility of this method was improved applying image processing algorithms prior to the cross correlation task. © 2008 IEEE.
Cell recognition and tracking using nonlinear cross-correlation
Perez-Careta, E., Torres-Cisneros, M., Avina-Cervantes, G., Debeir, O., Ibarra-Manzano, O. M., Aguilera-Gomez, E., Perez-Pantoja, E., & Negrete-Romero, G. (2008). Cell recognition and tracking using nonlinear cross-correlation. In Digest of the IEEE/LEOS Summer Topical Meetings (pp. 45-46) Piscataway, N.J.: IEEE. doi:10.1109/LEOSST.2008.4590481
Phase contrast image segmentation by weak watershed transform assembly
Debeir, O., Adanja, I., Warzée, N., Van Ham, P., & Decaestecker, C. (2008). Phase contrast image segmentation by weak watershed transform assembly. In Proceedings of 5th IEEE International Symposium on Biomedical Imaging : From Nano to Macro (ISBI) (pp. 724-727) IEEE.
Design of an articulated mini-fixation device for proximal interphalangeal joint finger fractures
Leloup, T., De Greef, A., Bantuelle, S., El Kazzi, W., Mannaert, G., Warzée, N., Delchambre, A., & Schuind, F. (2008). Design of an articulated mini-fixation device for proximal interphalangeal joint finger fractures. Brussels International Symposium: Bone Vascularization and Fracture Healing in the Upper Extremity (pp. 155-156).
Digital Integrated Operating Room
Malarme, P., Wikler, D., & Warzée, N. (2008). Digital Integrated Operating Room. Proceedings of Seventh Belgian Day on Biomedical Engineering (p. 58).
Registration and segmentation of head and neck volumes in IMRT applications
Krykwinski, C., Chellaoui, K., Nicolas, V., Parraga, A., Orban, J., Lee, J., Castadot, P., Warzée, N., Leloup, T., Verly, J., Macq, B., & Grégoire, V. (2008). Registration and segmentation of head and neck volumes in IMRT applications. Conference proceedings of Liège Image Days 2008: Medical Imaging (p. 17).
Using a Pocket PC as an interaction peripheral for Virtual Realty
De Groef, F., Baele, X., & Warzée, N. (2008). Using a Pocket PC as an interaction peripheral for Virtual Realty. Proceedings of IEEE VRIC 2008 (pp. 57-63) International Conference on Virtual Reality(10).
Un projet d'ingénierie biomédicale à double objectif pédagogique
Malarme, P., Wikler, D., & Warzée, N. (2008). Un projet d'ingénierie biomédicale à double objectif pédagogique. Colloque sur l'Enseignement des Technologies et des Sciences de l'Information et des Systèmes (CETSIS) (p. 6) Colloque sur l'Enseignement des Technologies et des Sciences de l'Information et des Systèmes (CETSIS)(7: October 2008).
2007
Image Processing for in Vitro Cell Tracking
Perez-Careta, J., Avina-Cervantes, G., Debeir, O., Sanchez-Mondragon, J., May-Arrioja, D. M., & Torres-Cisneros, M. (2007). Image Processing for in Vitro Cell Tracking. In C. Müller-Karger, S. Wong, & A. Cruz (Eds.), IV Latin American Congress on Biomedical Engineering 2007, Bioengineering Solutions for Latin America Health (pp. 1148-1151). (IFMBE proceedings, 18). Berlin, Heidelberg: Springer. doi:10.1007/978-3-540-74471-9_266In this paper, we propose an image processing method able to detect cells trough in vitro phase-contrast video microscopy. Bodies of the cells and image background are very similar; it does not allow having a good performance of tracking process. The proposed method normalizes original image to obtain better object-background contrast, image is equalized to highlight the object to be tracked, and image is threshold in order to obtain a better object-background contrast. Gray Level Morphological Gradient is applied to obtain more defined contours in the areas surrounded by Halos. Dilatation and Erosion were combined to achieve this goal. A subtraction process was applied after dilation of image to obtain borders. © Springer-Verlag Berlin Heidelberg 2007.
Documentation of the El Castillo (Puente Viesgo) cave using 3D scanning
Dunham, P., Debeir, O., Warzée, N., Groenen, M., & Rosoux, J. (2007). Documentation of the El Castillo (Puente Viesgo) cave using 3D scanning. Informations sur la publication Virtual Retrospect 2007 : Archéologie & Réalité Virtuelle Informations sur la publication Virtual Retrospect 2007 : Archéologie & Réalité Virtuelle
3D and Virtual Reality
Engels, L., Milojevic, D., & Warzée, N. (2007). 3D and Virtual Reality: Tools For Archaeological Hypothesis Verification. Proceedings of IEEE VRIC 2007 (pp. 203-208) International Conference on Virtual Reality(9).
Graph Nodes Clustering based on the Commute-Time Kernel
Yen, L., Fouss, F., Decaestecker, C., Francq, P., & Saerens, M. (2007). Graph Nodes Clustering based on the Commute-Time Kernel. In Proceedings of the 11th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2007): Lecture Notes in Computer Science: Vol. Vol. LNAI4426 (pp. pp. 1037-1045) Springer-Verlag.
Cell tracking by border-optical hybrid model
Torres-Cisneros, M., Avina-Cervantes, G., Debeir, O., & Sanchez-Mondragon, J. J. (2007). Cell tracking by border-optical hybrid model. In Frontiers in Optics : Proceedings Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion. (Optics InfoBase Conference Papers). Washington: The Optical Society.We propose an hybrid (image processing-correlation) method to obtain cells detection and cells migration tracking in order to analyze cells behaviors under different conditions. © 2007 OSA.
2006
Computer assisted needle positioning for liver tumor radiofrequency ablation (RFA)
Mundeleer, L., Wikler, D., Lucidi, V., Leloup, T., Debeir, O., Donckier De Donceel, V., & Warzée, N. (2006). Computer assisted needle positioning for liver tumor radiofrequency ablation (RFA). In proceedings First Symposium of the IEEE/EMBS Benelux Chapter (pp. 263-266).
Detection of Biological Cells in Phase-Contrast Microscopy Images
Ambriz-Colin, F., Torres-Cisneros, M., Avina-Cervantes, G., Saavedra-Martinez, J., Debeir, O., & Sanchez-Mondragon, J. (2006). Detection of Biological Cells in Phase-Contrast Microscopy Images. Fifth Mexican International Conference on Artificial Intelligence (MICAI'06)
Interactive web-based application for potteries capacity computing
Engels, L., Dunham, P., & Warzée, N. (2006). Interactive web-based application for potteries capacity computing. Proceedings of the 11th International Conference "Cultural Heritage and New Technologies" (pp. 1-5).
Imaging technologies for avoiding back pain at work
Engels, L., Leloup, T., & Warzée, N. (2006). Imaging technologies for avoiding back pain at work. Proceedings of the IEEE/EMBS Benelux Symposium (pp. 235-238).
Interactive airway wall thickness measurement from computed tomography data
Leloup, T., Tack, D., Mundeleer, L., Gevenois, P.-A., & Warzée, N. (2006). Interactive airway wall thickness measurement from computed tomography data. Proceedings of the IEEE/EMBS Benelux Symposium (pp. 283-286).
Apple Stem and Calyx Recognition by Decision Trees
Unay, D., Debeir, O., & Gosselin, B. (2006). Apple Stem and Calyx Recognition by Decision Trees. IASTED Visualization, Imaging and Image Processing Conference (VIIP 2006) (Palma de Mallorca, Spain)
2005
Automatic fluoroscopic Image Calibration for Traumatology Intervention Guidance
Leloup, T., El Kazzi, W., Debeir, O., Schuind, F., & Warzée, N. (2005). Automatic fluoroscopic Image Calibration for Traumatology Intervention Guidance. Proc. of the EUROCON 2005 (pp. 374-377) (Belgrade, Serbia).
Hierarchical Modeling
Helin, G., Milojevic, D., & Warzée, N. (2005). Hierarchical Modeling: Virtual Visit of the Bruxelles Cathedral. Virtual retrospect conference 2005 (pp. 602-605).
Real Time L-System Generated Trees Based on Modern Graphics Hardware
Baele, X., & Warzée, N. (2005). Real Time L-System Generated Trees Based on Modern Graphics Hardware. In Shape Modeling and Applications, 2005 International Conference (pp. 184-193) IEEE Computer Society.
Distal locking of intra-medullary nail using non-constrained fluoroscopic images
Leloup, T., El Kazzi, W., Schuind, F., & Warzée, N. (2005). Distal locking of intra-medullary nail using non-constrained fluoroscopic images. Proceedings of Surgetica 2005 (pp. 287-293) Computer-Aided Medical Interventions : tools and applications(Grenoble).
Modélisation hiérarchique
Helin, G., Milojevic, D., & Warzée, N. (2005). Modélisation hiérarchique: visite virtuelle de la crypte de la cathédrale de Bruxelles. Pre-Proceedings of Virtual Retrospect 2005 (pp. 71-75).
Hierarchical modeling
Helin, G., Milojevic, D., & Warzée, N. (2005). Hierarchical modeling: Virtual tour of the crypt in Brussels cathedral. Proceedings of Virtual Retrospect 2005 (pp. 602-605).https://dipot.ulb.ac.be/dspace/bitstream/2013/73555/3/05_helin-1.pdf
Computers and 3D Image Synthesis as Tools for Archaeology
Milojevic, D., Laugerotte, C., Dunham, P., & Warzée, N. (2005). Computers and 3D Image Synthesis as Tools for Archaeology. Computer as a Tool, 2005. EUROCON 2005.The International Conference on (pp. 1036-1039) EUROCON 2005.
Mitotic Tree Construction by Computer In Vitro Cell Tracking : a Tool for Proliferation and Motility Features Extraction
Debeir, O., Milojevic, D., Leloup, T., Van Ham, P., Kiss, R., & Decaestecker, C. (2005). Mitotic Tree Construction by Computer In Vitro Cell Tracking : a Tool for Proliferation and Motility Features Extraction. In Proc. of the EUROCON 2005 (pp. 951-954) IEEE, Piscataway.
2004
Comparison of very high spatial resolution satellite image segmentations
Carleer, A., Debeir, O., & Wolff, E. (2004). Comparison of very high spatial resolution satellite image segmentations. In L. Bruzzone (Ed.), Image and Signal Processing for Remote Sensing IX (pp. 532-542). (Proceedings of SPIE--the International Society for Optical Engineering, 5238). Bellingham: SPIE. doi:10.1117/12.511027Since 1999, very high spatial resolution data represent the surface of the earth with more details. However, information extraction by computer-assisted classification techniques proves to be very complex owing to the internal variability increase in land-cover units and to the weakness of spectral resolution1, 2, 3. The increase in variability decreases the statistical separability of land-cover classes in the spectral space 4. Per pixel multispectral classification techniques are then insufficient for an extraction of complex categories and spectrally heterogeneous land-cover, like urban areas5. Per region classification was proposed as an alternative approach6, 7. The first step of this approach is the segmentation. A large variety of segmentation algorithms were developed these last 20 years8 and a comparison of their implementation on very high spatial resolution images is necessary. For this study, four algorithms from the two main groups of segmentation algorithms (boundary-based and region-based algorithms) were selected. In order to compare the algorithms, an evaluation of each algorithm was carried out with empirical discrepancy evaluation methods. This evaluation is carried out with a visual segmentation of IKONOS panchromatic images.
Towards a Virtual 3D Reconstruction of a Rood-Screen from its Archaeological Fragments
Dierkens, A., Anagnostopoulos, P., Laugerotte, C., & Warzée, N. (2004). Towards a Virtual 3D Reconstruction of a Rood-Screen from its Archaeological Fragments. In [Enter the Past]. The E-Way into the Four Dimensions of Cultural Heritage. CAA 2003. Computer Applications and Quantitative Methods in Archaeology (pp. 500-504). (BAR. International Series, 1227). Oxford: British Archaeological Reports.https://dipot.ulb.ac.be/dspace/bitstream/2013/65640/3/VX-002916_08-11-2016_09-03-57_abbyy.pdf
An environment for the analysis and reconstruction of archaeological objects
Laugerotte, C., & Warzée, N. (2004). An environment for the analysis and reconstruction of archaeological objects. 5th International Symposium on Virtual Reality, Archaeology and Cultural Heritage Eurographics Symposium Proceedings (pp. 165-174) VAST 2004.
3D orientation of archaeological fragments coming from a Gothic spire
Laugerotte, C., & Warzée, N. (2004). 3D orientation of archaeological fragments coming from a Gothic spire. 5th International Symposium on Virtual Reality, Archaeology and Cultural Heritage Eurographics Symposium Proceedings (pp. 175-183) VAST 2004.
Traumatology surgical intervention guided by virtual reality
Leloup, T., El Kazzi, W., Schuind, F., & Warzée, N. (2004). Traumatology surgical intervention guided by virtual reality. Proceedings of IEEE VRIC 2004 (pp. 53-59) Virtual Reality International Conference(6).
2002
Conception of a navigation system controlling the reduction of long bone fractures treated by external fixation
Leloup, T., El Kazzi, W., Schuind, F., & Warzée, N. (2002). Conception of a navigation system controlling the reduction of long bone fractures treated by external fixation. Proceedings of Surgetica 2002 (pp. 111-116) Computer-Aided Medical Interventions : tools and applications.
Wood Analyst©: A new image analysis software adapted for douglas-fir thin cross sections
El Aydam, M., Debeir, O., Decoux, V., Defays, E., Beeckman, H., & De Cannière, C. (2002). Wood Analyst©: A new image analysis software adapted for douglas-fir thin cross sections. Proceedings of the 4th meeting COST E20 : Wood Fibre Cell Wall Structure (p. 12) (May 30-June 1: Reims, France).
2001
Real-time simulation of virtual objects impact with shattering
Baele, X., & Warzée, N. (2001). Real-time simulation of virtual objects impact with shattering. Proceedings of the Game Technology Conference (p. 10) GTEC'01.
Limiting the Number of Trees in Random Forests
Latinne, P., Debeir, O., & Decaestecker, C. (2001). Limiting the Number of Trees in Random Forests. In Multiple Classifier Systems: Proceedings of the Second International Workshop (pp. 178-187). (Lecture Notes in Computer Science). Springer.
Adjusting the outputs of a classifier to new a priori probabilities may significantly improve classification accuracy: Evidence from a multi-class problem in remote sensing
Latinne, P., Saerens, M., & Decaestecker, C. (2001). Adjusting the outputs of a classifier to new a priori probabilities may significantly improve classification accuracy: Evidence from a multi-class problem in remote sensing. In Proceedings of the Eighteenth International Conference on Machine Learning (ICML 2001) (pp. pp 298-305). (C.E. Brodley and A. Pohoreckyj Danyluk (eds)). Morgan Kaufmann.
Characterization of acting filaments in cancer cells by the Hough transform
Lyazghi, A., Decaestecker, C., Camby, I., Kiss, R., & Van Ham, P. (2001). Characterization of acting filaments in cancer cells by the Hough transform. In Proceedings of the 2001 IASTED International Conference on Signal Processing, Pattern Recognition and Applications (pp. pp. 138-142) M.H. Hamza (ed.).
Amélioration de l'interprétation numérique de l'occupation du sol
Van Den Steen, I., Wolff, E., Debeir, O., Van Ham, P., & Latinne, P. (2001). Amélioration de l'interprétation numérique de l'occupation du sol. 23e Symposium canadien sur la télédétection, Congrès de l'Association québécoise de télédétection. La télédétection au troisième millénaire : Du global au local (Québec, Canada)
Remote Sensing Classification of Spectral, Spatial and Contextual Data Using Multiple Classifier Systems
Debeir, O., Latinne, P., & Van Den Steen, I. (2001). Remote Sensing Classification of Spectral, Spatial and Contextual Data Using Multiple Classifier Systems. Proc. of the 8th European Congress of Stereology and Image Analysis ECS-IA'2001
2000
Mixing Bagging and Multiple Feature Subsets to Improve Classification Accuracy of Decision Tree Combination
Latinne, P., Debeir, O., & Decaestecker, C. (2000). Mixing Bagging and Multiple Feature Subsets to Improve Classification Accuracy of Decision Tree Combination. In BENELEARN 2000, Tenth Belgian-Dutch Conference on Machine Learning. ((8 p.)). .
Different Ways of Weakening Decision Trees and Their Impact on Classification Accuracy of DT Combination
Latinne, P., Debeir, O., & Decaestecker, C. (2000). Different Ways of Weakening Decision Trees and Their Impact on Classification Accuracy of DT Combination. In Multiple Classifier Systems: Proceedings of the First International Workshop: Vol. 1857 (pp. 200-209). (Lecture Notes in Computer Science, Springer). G. Goos, J. Hartmanis and J. van Leeuwen.
Virtual reality based on Conventional X-Rays
Van Ham, P., Leloup, T., Warzée, N., & Schuind, F. (2000). Virtual reality based on Conventional X-Rays. Proceedings of the International Symposium (p. 32) Diagnostic Imaging of the Shoulder, Elbow and Wrist Joints.
1999
Building virtual 3D bone fragments models to control diaphyseal fracture reduction
Leloup, T., Schuind, F., Warzée, N., & Van Ham, P. (1999). Building virtual 3D bone fragments models to control diaphyseal fracture reduction. Proceeding of the SPIE medical imaging conference (pp. 315-323) SPIE medical imaging(3658).
1998
Automatic objects selection in computer-assisted microscopy
Leloup, T., Warzée, N., Van Ham, P., & Kiss, R. (1998). Automatic objects selection in computer-assisted microscopy. Proceeding of the SPIE medical imaging conference (pp. 1157-1167) SPIE medical imaging(3338).
1996
Two and three-dimensional processing of medical images on a personal computer
Warzée, N. (1996). Two and three-dimensional processing of medical images on a personal computer. Image'Com 96 (pp. 247-249) Communicating by image and multimedia.
1995
Comparisons of different RBF networks for pattern classification
Decaestecker, C., & Saerens, M. (1995). Comparisons of different RBF networks for pattern classification. In F. Fogelman-Soulié & P. Gallinary (Eds.), Industrial applications of neural networks (pp. 591-596) Singapore: World Scientific.https://dipot.ulb.ac.be/dspace/bitstream/2013/70184/4/10144e00-a91d-49b5-8209-af33e9d7a97b.txt
Multiple-Knowledge Representation in Concept Learning
Van de Merckt, T., & Decaestecker, C. (1995). Multiple-Knowledge Representation in Concept Learning. In N. Lavrač & S. Wrobel (Eds.), Machine Learning: ECML-95 (pp. 200 - 217). (Lecture Notes in Artificial Intelligence, 912). Berlin, Heidelberg: Springer Verlag.https://dipot.ulb.ac.be/dspace/bitstream/2013/70190/4/6d393c06-69ad-4d62-8148-fcd73302f7bb.txt
Towards Neuro-Fuzzy Defuzzification in Benelearn '95
Bersini, H., Bontempi, G., & Decaestecker, C. (1995). Towards Neuro-Fuzzy Defuzzification in Benelearn '95. In Proceedings of the 5th Belgian-Dutch Conference on Machine Learning (pp. 91-98) .
Comparing RBF and fuzzy inference systems on theoretical and practical basis
Bersini, H., Bontempi, G., & Decaestecker, C. (1995). Comparing RBF and fuzzy inference systems on theoretical and practical basis. In F. Fogelman-Soulié & P. Gallinari (Eds.), ICANN '95: conférence internationale sur les Réseaux de neurones artificiels: Vol. 1 (pp. 169-174) Paris: EC2 & Cie.
1994
Cognitive and Semantic interpretation of a NN classifier using prototypes
Decaestecker, C., & Van de Merckt, T. (1994). Cognitive and Semantic interpretation of a NN classifier using prototypes. In World Congress on Neural Networks: Vol. 4 (pp. 453-458) Hillsdale, N.J.: L. Erlbaum.https://dipot.ulb.ac.be/dspace/bitstream/2013/70182/4/25458b51-a1e0-40fa-a6e5-df9a45f3d7e6.txt
How to "secure" the decisions of a NN classifier
Decaestecker, C., & Van de Merckt, T. (1994). How to "secure" the decisions of a NN classifier. In The 1994 IEEE International Conference on Neural Networks: Vol. 1 (pp. 263-268) Piscataway, NJ: IEEE.
1993
Using prototypes to solve problems in neural net classifiers
Decaestecker, C. (1993). Using prototypes to solve problems in neural net classifiers. In Third International Conference on Artificial Neural Networks, 1993. (pp. 195-199) IET CONFERENCE PUBLICATIONS.
NNP: a neural net classifier using prototypes
Decaestecker, C. (1993). NNP: a neural net classifier using prototypes. In 1993 IEEE International Conference on Neural Networks: Vol. 2 (pp. 822-824) New York: IEEE. doi:10.1109/ICNN.1993.298664We present a three-layer neural net classifier for multiclass object recognition problems requiring piecewise nonlinear discriminant surfaces. The hidden layer is composed of prototypes of each class. The weights from the input to the hidden layer are the vector descriptions of prototypes (in the input feature space). The output layer neurons represent the classes, the hidden-to-output weights being binary and fixed. They map each prototype neuron to one of the class output neurons. Only the input-to-hidden weights are adapted by an algorithm using deterministic annealing and gradient descent techniques. This algorithm permits the distribution of prototypes in classes while minimising the classification error rate.
1991
Description Contrasting in Incremental Concept Formation
Decaestecker, C. (1991). Description Contrasting in Incremental Concept Formation. In Y. Kodratoff (Ed.), Machine Learning-EWSL-91 (pp. 220-233) Berlin, Heidelberg, New York: Springer-Verlag.
Statistical Strategies in Incremental Conceptual Classification
Decaestecker, C. (1991). Statistical Strategies in Incremental Conceptual Classification. In R. Gutiérrez & M. J. Valderrama (Eds.), Applied stochastic models and data analysis : proceedings of the Fifth International Symposium on ASMDA (pp. 150-161). (World Scientific). Singapore: World Scientific.
Incremental Classification, a Multidisciplinary Viewpoint
Decaestecker, C. (1991). Incremental Classification, a Multidisciplinary Viewpoint. In E. Diday & Y. Lechevallier (Eds.), Symbolic-numeric data analysis and learning: proceedings of the conference (pp. 283-285) New York: Nova Science Publishers.
1990
Image processing and Application of CAD to the manufacture of prostheses
Warzée, N., Warzée, G., & Van Rolleghem, J. (1990). Image processing and Application of CAD to the manufacture of prostheses. Image'COM 90 (pp. 354-357) Communicating with images : from tools to users(19-21 novembre 1990: Bordeaux).https://dipot.ulb.ac.be/dspace/bitstream/2013/73538/3/1990-Cad-Cam-prostheses.pdf
Formation de concepts en intelligence artificielle
Decaestecker, C. (1990). Formation de concepts en intelligence artificielle: Comparaison avec l'analyse relationnelle. In Proceedings of the XXIIe Journées de Statistiques (pp. 175-177) .Des des travaux précédents ([Decaes89 a,b][Decaes90]), l'auteure a étudié des mécanismes incrémentaux de "Formation de Concepts", et a développé ADECLU, un système incrémental de "Conceptual Clustering". Dans cet article, l'auteure présente les différentes version de ADECLU et les compare, du point de vue conceptuel et des performances, aux méthodes développées en Analyse Relationnelle (Agrégation et Bloc Sériation) [Marc81, 87][Mich87]
1989
Incremental Concept Formation with Attribute Selection
Decaestecker, C. (1989). Incremental Concept Formation with Attribute Selection. In K. Morik (Ed.), EWSL 89 : 4th European working session on learning (pp. 49-58) London: Pitman-Morgan Kaufman.https://dipot.ulb.ac.be/dspace/bitstream/2013/68837/4/0f5fc860-5fcb-4a53-abc9-6dc26c93e66c.txt
Application of CAD / CAM in Prosthetics and Orthotics
Van Rolleghem, J., Warzée, G., Warzée, N., Vis, J., Vanderlinden, J., & Cremer, J. (1989). Application of CAD / CAM in Prosthetics and Orthotics. International Society for Prosthetics and Orthotics (p. 10).https://dipot.ulb.ac.be/dspace/bitstream/2013/73537/3/1989-ISPO.pdf
Formation incrémentale de concepts par un critère d'adéquation
Decaestecker, C. (1989). Formation incrémentale de concepts par un critère d'adéquation. In Actes des 4èmes Journées Française d'Apprentissage (pp. 63-78) .
Application de la CAO. La conception et la fabrication de prothèses et d'orthèses
Warzée, G., Warzée, N., Vis, J., & Cremer, J. (1989). Application de la CAO. La conception et la fabrication de prothèses et d'orthèses. Actes du MICAD 89 (p. 14).
Application of the " CAD - CAM " in
Van Rolleghem, J., Warzée, N., & Warzée, G. (1989). Application of the " CAD - CAM " in. APO Kurs "Introduction de l'électronique dans l'orthopédie technique"(13-14 octobre 1989: Avenches)
Incremental concept formation via a suitability criterion
Decaestecker, C. (1989). Incremental concept formation via a suitability criterion. In E. Diday (Ed.), Data analysis, learning symbolic and numeric knowledge: proceedings of the Conference on Data Analysis, Learning Symbolic and Numeric Knowledge (pp. 435-442) New York: Nova Science Publishers.
1988
Philosophy and Application of CAD-CAM for Ortheses and Prostheses
Van Rolleghem, J., Warzée, N., & Warzée, G. (1988). Philosophy and Application of CAD-CAM for Ortheses and Prostheses. Orthopädie + Reha-Technik(10-13 mai 1988: Nurnberg)
Participations à des congrès et colloques internationaux
2023
Adaptive Changes in Heart Rate Variability and Cardiac Function during Long-term Spaceflight: Insights from Wearable Devices
Balali, P., Tordeur, C., Rabineau, J., Faoro, V., Funtova, I., Debeir, O., Luchitskaya, E., Migeotte, P.-F., Tank, J., & Van De Borne, P. (2023). Adaptive Changes in Heart Rate Variability and Cardiac Function during Long-term Spaceflight: Insights from Wearable Devices. Paper session presented at International Astronautical Congress,74th,Baku, Azerbaijan,2-6 October 2023.
Adaptive Changes in Heart Rate Variability and Cardiac Function during Long-term Spaceflight
Balali, P., Tordeur, C., Rabineau, J., Faoro, V., Funtova, I., Debeir, O., Luchitskaya, E., Migeotte, P.-F., Tank, J., & Van De Borne, P. (2023). Adaptive Changes in Heart Rate Variability and Cardiac Function during Long-term Spaceflight: Insights from Wearable Devices. Paper session presented at International Society for Gravitational Physiology annual meeting (42: 2-7 July 2023: Antwerp, Belgium).
2021
Un outil en ligne pour l'étude 3D de la sculpture ?
Clerbois, S., Debeir, O., Derycke, D., Lo Buglio, D., Guillaume, H.-L., & Schenkel, A. (2021). Un outil en ligne pour l'étude 3D de la sculpture ?: Première présentation de la plateforme conçue par PANORAMA (Université libre de Bruxelles) pour le projet USINE (usages de la sculpture et industrialisation : nouveaux enjeux). Paper session presented at Séminaire AtlSM de l'Université de Lyon (11 octobre 2021: Lyon).
Panorama, une plateforme de recherche à l'ULB, et le projet USINE, webplaterforme3D pour l'étude collaborative de la sculpture
Clerbois, S., Derycke, D., Lo Buglio, D., Guillaume, H.-L., Schenkel, A., & Debeir, O. (2021). Panorama, une plateforme de recherche à l'ULB, et le projet USINE, webplaterforme3D pour l'étude collaborative de la sculpture. Paper session presented at Séminaire de la transversalité images-sons-mémoire, LAHRA, Université de Lyon (11 octobre 2021).https://dipot.ulb.ac.be/dspace/bitstream/2013/332691/3/Porto:Clerbois-Text.docx
2014
ADAM-17/FHL2 Colocalisation Suggests Interaction and Role of These Proteins in Colorectal Cancer
Verset, L., Sauvage, S., Tommelein, J., Moles Lopez, X., Decaestecker, C., Mareel, M., Bracke, M., Salmon, I., De Wever, O., & Demetter, P. (2014). ADAM-17/FHL2 Colocalisation Suggests Interaction and Role of These Proteins in Colorectal Cancer. Paper session presented at Belgian week of gastroenterology (XXVIth Edition: 12/02/2014: Dolce la Hulpe).
2010
Indoleamine 2,3-dioxygenase expression is an independent prognostic factor in pT1-4N1Mx staged colorectal cancer
Ferdinande, L., Mathieu, A., Decaestecker, C., Negulescu, A., Cuvelier, C. A., Salmon, I., & Demetter, P. (2010). Indoleamine 2,3-dioxygenase expression is an independent prognostic factor in pT1-4N1Mx staged colorectal cancer. Paper session presented at Gastrointestinal Cancers Symposium Rabat (January,2010).
2009
In vivo assessment of temozolomide delivery systems for inhalation therapy of lung cancer
Wauthoz, N., Deleuze, P., Hecq, J., Roland, I., Saussez, S., Adanja, I., Debeir, O., Decaestecker, C., Mathieu, V., Kiss, R., & Amighi, K. (2009). In vivo assessment of temozolomide delivery systems for inhalation therapy of lung cancer. Paper session presented at Journée doctorale Pôle Santé (17/12/2009: Campus Erasme).In Vivo Assessment of Temozolomide Local Delivery for Lung Cancer Inhalation Therapy Nathalie Wauthoz, Philippe Deleuze, Julien Hecq, Isabelle Roland, Sven Saussez, Ivan Adanja, Olivier Debeir, Christine Decaestecker, Véronique Mathieu, Karim Amighi Laboratoire de Pharmacie Galénique et de Biopharmacie Director : Karim Amighi Abstract The aim of this study was to compare the efficacy of local drug delivery by inhalation to intravenous delivery in a B16F10 melanoma metastatic lung model. Temozolomide was formulated as a suspension, which was elaborated and evaluated in terms of particle size, shape and agglomeration. An endotracheal administration device was used to aerosolize the suspension. This mode of delivery was evaluated at different temozolomide concentrations and was optimized for the uniformity of delivered dose, the droplet size distribution and the distribution of droplets in vivo. Of the particles in the stabilized suspension, 79% were compatible with the human respirable size range, and this formulation retained 100% in vitro anticancer activity as compared to temozolomide alone in three distinct cancer cell lines. The pulmonary delivery device provided good reproducibility in terms of both the dose delivered and the droplet size distribution. Most of the lung tissues that were exposed to aerosol droplets contained the particles, as revealed by fluorescent microscopy techniques. The global in vivo antitumor activity of the inhaled temozolomide provided a median survival period similar to that for intravenous temozolomide delivery, and three out of twenty-seven mice (11%) survived with almost complete eradication of the lung tumours. The present study thus shows that inhalation of a simple liquid formulation is well tolerated and active against a very biologically aggressive mouse melanoma pulmonary pseudo-metastatic model. This inhalation delivery could be used to deliver other types of anticancer drugs.
https://dipot.ulb.ac.be/dspace/bitstream/2013/85223/2/PRESENTATION.pdf
2008
Aristolochic acid induces proximal tubule apoptosis, EMT and interstitial cell infiltration
Nortier, J., Pozdzik, A., Salmon, I., Decaestecker, C., Van den Branden, C., Verbeelen, D., Deschodt Lanckman, M., & Vanherweghem, J.-L. (2008). Aristolochic acid induces proximal tubule apoptosis, EMT and interstitial cell infiltration. Paper session presented at ACIR meeting (8 Juillet 2008: Heidelberg, Germany).
Aristolochic acid induces proximal tubule apoptosis, epithelial to mesenchymal transformation and immuncompetents cells infiltration
Pozdzik, A., Salmon, I., Debelle, F. D., Decaestecker, C., Van den Branden, C., Deschodt Lanckman, M., Vanherweghem, J.-L., & Nortier, J. (2008). Aristolochic acid induces proximal tubule apoptosis, epithelial to mesenchymal transformation and immuncompetents cells infiltration. Paper session presented at World Health Organisation (WHO) symposia and Workshop of diagnostic criteria's of Balkan Endemic nephropathy (18 Avril 2008: Bol, Croatie).
2007
Early intratubular epithelial to mesenchymal transition (EMT) after aristolochic acid intoxication
Pozdzik, A., Salmon, I., Debelle, F., De Prez, E., Decaestecker, C., Van den Branden, C., Verbeelen, D., Deschodt Lanckman, M., Vanherweghem, J.-L., & Nortier, J. (2007). Early intratubular epithelial to mesenchymal transition (EMT) after aristolochic acid intoxication. Paper session presented at Annual meeting of the Belgian Society of Nephrology (8 mars 2007: Bruxelles).
From aristolochic acid intoxication to renal fibrosis
Pozdzik, A., Salmon, I., Husson, C., Decaestecker, C., Rogier, E., Bourgeade, M.-F., Deschodt Lanckman, M., Vanherweghem, J.-L., & Nortier, J. (2007). From aristolochic acid intoxication to renal fibrosis: activated macrophages and CD8+CD103+ T lymphocytes are key effectors. Paper session presented at Annual meeting of the Belgian Society of Nephrology (8 mars 2007: Bruxelles).
1990
Blocs Sériation de Matrices Binaires par Algorithme Génétique
De Garis, H., & Decaestecker, C. (1990). Blocs Sériation de Matrices Binaires par Algorithme Génétique. Paper session presented at Colloque international sur les méthodes de blocs sériations et applications (April 3-5, 1990: Strasbourg).Le but de cet article est de montrer que l'Algorithme Génétique ("Genetic Algorithms in Search, Optimization and Machine Learning", H. Goldberg, Addison Wesley, 1989.