Staff  |  Alumni
Dipl.-Ing.

André Bell

Research Scientist

Institute of Imaging & Computer Vision
RWTH Aachen University
Sommerfeldstraße 24
52074 Aachen
Germany

André Bell
phone:
fax:
office room:
email:
+49 (241) 80 - 27860
+49 (241) 80 - 22200

Andre.Bell@lfb.rwth-aachen.de

Education

Diploma thesis (Master thesis) and student research projects
  • Master thesis Urszula Dlubak:
    Evaluation of Nuclear Segmentation for HDR-Microscopy on Morphologically Stained Cell Specimens in Early Cancer Diagnosis
  • Student research project Claude Seiler:
    Noise Reduction in High Dynamic Range Imaging
  • Diploma thesis Stefan Bisplinghoff:
    Resolution and Dynamic Range Adaptive Imaging for Microscopy Systems
  • Student research project Eric Guiffo Kaigom:
    Novelty Detection with One Class SVM and Kernel PCA
  • Student research project Rebecca Collong:
    On the Separability of Colors in Multiple-Immunocytochemically Stained Specimens
  • Diploma thesis Gerlind Herberich:
    Image Analysis of Cytopathological Specimens for Early Cancer Diagnosis: Segmentation and Detection of Silver Stained Nuclei
  • Diploma thesis Dirk Müller-Frank:
    Automatic Screening for Early Cancer Diagnosis ny Image Analysis of Immunocytochemically Stained Cytologic Specimens
  • Diploma thesis Jens Kaftan:
    Image Analysis for Early Cancer Diagnosis on Cytopathological Specimens with AgNOR Segmentation and Imaging Optimization
  • Student research project Lars Höck:
    Python wrapper for the Matrox Imaging Library
  • Student research project Stefan Bisplinghoff:
    Chromatine pattern Based Classification of Analysis and Reference Cells for DNA-Cytometry of Brush Smears of the Oral Mucosa
  • Diploma thesis Sven-Olaf Ropers:
    Automatic Microscopic Relocalization of Nuclei-ensembles by Means of Multimodal Scene Comparison
  • Diploma thesis Georg Himmrich:
    Development of a model for the measurement of the DNA content of cell nuclei, based on the 3D-reconstruction of microscopic focus series
  • Diploma thesis Tadeusz Brodziak:
    Digital control for a haptic interaction device
  • Student research project Tadeusz Brodziak:
    Assay of analog control for a haptic device by using a PID element
  • Diploma thesis Vincent Auvray:
    Evaluation of algorithms for the detection of stained cells depending on the resolution
Teaching: Exercises, Laboratory, Projects
  • Exercise: Basics in electro-technics for mechanical engineering
  • Exercises in digital image processing I und II
    • Measurement of the optical transfer function (OTF)
    • Multiscale processing, Wavelets
  • Exercise in digital image processing III, computer visualistic
  • Laboratory digital image processing
    • 3D reconstruction by structured light
    • 3D presentation of voxel data
  • Projects in objectoriented programming
    • Anaglyph images
    • 3D presentation of voxel data
    • Compiler for abstract machines
    • 3D shadow scanner
    • Morphological image processing
  • Methods in software engineerig
    • Design patterns
    • Template Meta Programming
    • Version control with CVS, subversion, or darcs
    • Sourcecode documentation with Doxygen
    • Projectmanagement with trac
    • Boost library
    • GUI development using the Qt library
    • Python
  • Girls day (Schnupperstudium)
    • 3D Photography- Portrait photos different
    • Robo-Light - R2D2 and C3POs small friends

Research interests

  • Segmentation (Mean shift segmentation, Model based region grouping, ...)
  • Segmentation evaluation
  • Multiscale analysis, Wavelets
  • Deconvolution, 3D-Deconvolution
  • Identification of imaging systems (OTF measurement, Radiometric calibration, Camera calibration, non linear camera transfer function)
  • High-dynamic-range imaging
As well as the application of such methods for the early cancer diagnosis based on microscopic images of cell specimen. For example:
  • High dynamic range microscopy (HDR microscopy)
  • Segmentation of silver stained nuclei
  • Detection of AgNORs in silver stained Nuclei
  • Quantification of immuncytochemical stained cytopathological specimens

Publications

2010

Sep 26-29
2010

BibTeX
Jens N. Kaftan, Andre A. Bell and Til Aach
Denoising the High Dynamic Range Imaging Process: A Comparative Study Using SNR and Detail Loss Criteria
IEEE International Conference on Image Processing

May 23-25
2010

BibTeX
David Friedrich, Johannes Brauers, André Bell and Til Aach
Towards Fully Automated Precise Measurement of Camera Transfer Functions
9th IEEE Southwest Symposium on Image Analysis and Interpretation

2009

Nov 7-11
2009

BibTeX PDF
Jens N. Kaftan, Andre A. Bell, Claude Seiler and Til Aach
Wavelet Based Denoising by Correlation Analysis for High Dynamic Range Imaging
IEEE International Conference on Image Processing

2009

BibTeX
T.W. Remmerbach, D. Meyer-Ebrecht, T. Aach, T. Würflinger, A.A. Bell, T.E. Schneider, N. Nietzke, B. Frerich and A. Böcking
Towards a Multi Modal Cell Analysis of Brush Biopsies for Early Detection of Oral Cancer
Cancer Cytopathology

2009

BibTeX PDF
André A. Bell, Johannes Brauers, Jens N. Kaftan, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
High Dynamic Range Microscopy for Cytopathological Cancer Diagnosis
IEEE Journal of Selected Topics in Signal Processing (Special Issue on: Digital Image Processing Techniques for Oncology)

2008

October 1-2
2008

BibTeX PDF
Johannes Brauers, Nils Schulte, Andre Bell and Til Aach
Color Accuracy and Noise Analysis in Multispectral HDR Imaging
14. Workshop Farbbildverarbeitung 2008

Oct 12-15
2008

BibTeX PDF
Andre A. Bell and Claude Seiler and Jens N. Kaftan and Til Aach
Noise in High Dynamic Range Imaging
IEEE International Conference on Image Processing

September 18-20
2008

BibTeX
T. W. Remmerbach and D. Meyer-Ebrecht and A. A. Bell and N. Nietzke and B. Frerich and A. Böcking
Towards a multi modal cell analysis of brush biopsies for detection of oral squamous cell carcinoma
Abstracts of the 9th Biennial Congress of the European Association of Oral Medicine

June 15-18
2008

BibTeX
A. Böcking, A. Onofre, F. Onofre, N. Pomjanski, A. Bell, T. Würflinger, D. Meyer-Ebrecht and T. Aach
Multimodal Diagnostic Cytometry
Cytopathology, 34th European Congress of Cytology

March 12-13
2008

BibTeX PDF
Andre A. Bell, Gerlind Herberich, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Analysis of Silver Stained Cell Specimens: Nuclear Segmentation and Validation
Liege Image Days, International Conference on Medical Imaging

March 5-8
2008

BibTeX
A. Böcking, T. Aach, A. Bell, C. Henning, T. Klein, A. Metzger, N. Nitzke, Q. H. Nguyen, N. Pomjanski, A. Onofre, T. Remmerbach, T. Schneider, T. Würflinger and D. Meyer-Ebrecht
Multimodal Cell Analysis (MMCA) for Early Cancer Detection
Journal Cellular Oncology, ISCO Congress

March 5-8
2008

BibTeX
Andre A. Bell, Timna E. Schneider, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Automated Detection of Immunocytochemical Marker Demonstrations for Cancer Screening
Journal Cellular Oncology, ISCO Congress

March 5-8
2008

BibTeX
Andre A. Bell, Gerlind Herberich, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Nuclear Segmentation for Silver Stained Cytopathological Specimens
Journal Cellular Oncology, ISCO Congress

March 5-8
2008

BibTeX
Andre A. Bell, Jens N. Kaftan, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Automated Detection of AgNORs by High Dynamic Range Microscopy
Journal Cellular Oncology, ISCO Congress

Jan 27-31
2008

BibTeX PDF
Johannes Brauers and Nils Schulte and André Alexander Bell and Til Aach
Multispectral High Dynamic Range Imaging
IS&T/SPIE Electronic Imaging

January 22-25
2008

BibTeX PDF
Jens N. Kaftan, André A. Bell and Til Aach
Mean Shift Segmentation - Evaluation of Optimization Techniques
Proceedings of the Third International Conference on Computer Vision Theory and Applications, VISAPP 2008

2007

November 4-7
2007

BibTeX
André A. Bell, Dietrich Meyer-Ebrecht, and Alfred Böcking and Til Aach
*invited paper* HDR-Microscopy of Cell Specimens: Imaging and Image Analysis
41st Asilomar Conference on Signals, Systems and Computers

September 16-19
2007

BibTeX PDF
André A. Bell, Gerlind Herberich, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Segmentation and Detection of Nuclei in Silver Stained Cell Specimens for Early Cancer Diagnosis
IEEE International Conference on Image Processing (ICIP2007)

2007

BibTeX PDF
André Bell, Thomas Würflinger, Sven-O. Ropers, Alfred Böcking, Til Aach and Dietrich Meyer-Ebrecht
Towards Fully Automatic Acquisition of Multimodal Cytopathological Microscopy Images with Autofocus and Scene Matching
Methods of Information in Medicine

March 25-27
2007

BibTeX PDF
Timna Schneider, André Bell, Gerlind Herberich, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Chromatinmuster-basierte Zellklassifizierung für die DNS-Bildzytometrie an Mundschleimhaut-Abstrichen
Bildverarbeitung für die Medizin 2007

February 17-22
2007

BibTeX PDF
André Bell, Timna Schneider, Dirk Müller-Frank, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Fully Automated Screening of Immunocytochemically Stained Specimens for Early Cancer Detection
Medical Imaging 2007: Computer-Aided Diagnosis

February 17-22
2007

BibTeX PDF
Timna Schneider, André Bell, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Computer Aided Cytological Cancer Diagnosis: Cell Type Classification as a Step Towards Fully Autometic Cancer Diagnosis on Cytopathological Specimens of Serous Effusions
Medical Imaging 2007: Computer-Aided Diagnosis

2006

2006

BibTeX PDF
Til Aach, André Bell, Alfred Böcking,Dietrich Meyer-Ebrecht, Timna Schneider and Thomas Würflinger
Digitale Bildanalyse ermöglicht neue Methoden der Krebsdiagnostik
RWTH Themen (ISSN: 0179-079X)

September 21-26
2006

BibTeX PDF
Andre A. Bell, Jens N. Kaftan, Timna Schneider, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Imaging and Image Processing for Early Cancer Diagnosis on Cytopathological Microscopy Images: Towards Fully Automatic AgNOR Detection
9th Korea-Germany Joint Workshop on Advanced Medical Image Processing

Oct 08-11
2006

BibTeX PDF
Andre A. Bell, Jens N. Kaftan, Til Aach, Dietrich Meyer-Ebrecht and Alfred Böcking
High Dynamic Range Images as a Basis for Detection of Argyrophilic Nucleolar Organizer Regions Under Varying Stain Intensities
IEEE International Conference on Image Processing, ICIP 2006

November 22-24
2006

BibTeX PDF
Jens N. Kaftan, Andre A. Bell, Dietrich Meyer-Ebrecht, Alfred Böcking and Til Aach
Segmentation of Nucleolar Organizer Regions by Means of High Dynamic Range Cell Imaging and Analysis
Vision, Modeling, and Visualization (VMV) 2006

March 28-30
2006

BibTeX PDF
Andre A. Bell, Jens N. Kaftan, Dietrich Meyer-Ebrecht and Til Aach
An Evaluation Framework for the Accuracy of Camera Transfer Functions Estimated from Differently Exposed Images
7th IEEE Southwest Symposium on Image Analysis and Interpretation

2005

Sept. 11-14
2005

BibTeX PDF
Sven-Olaf Ropers, André A Bell, Thomas Würflinger, Alfred Böcking and Dietrich Meyer-Ebrecht
Automatic Scene Comparison and Matching in Multimodal Cytopathological Microscopic Images
IEEE International Conference on Image Processing (ICIP-2005)

2005

BibTeX PDF
Sven-Olaf Ropers, Thomas Würflinger, André Alexander Bell, Alfred Böcking und Dietrich Meyer-Ebrecht
Automatische mikroskopische Relokalisation von Zellkern-Ensembles mit Hilfe eines multimodalen Szenenvergleiches
Bildverarbeitung für die Medizin 2005)

2004

Sep. 21-24
2004

BibTeX
Dietrich Meyer-Ebrecht, Alfred Böcking, Andre Bell, Thorsten Klein, Timna Schneider, Jens Stockhausen and Thomas Würflinger
Multimodal Cell Analysis (MMCA): A new method for highly accurate and early non-invasive cancer diagnoses
Biomedical Engineering. (BMT 2004)


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