Chandrajit Bajaj



VolRover is interactive multi-purpose image processing software developed at CVC. It can visualize three dimensional imaging data of any size (as big as terabyte) in a commodity PC or workstation and additionally supports the following image processing operations.

  • Image Contrast Enhancement
  • Filtering/Noise Reduction
  • Image Segmentation
  • Isocontouring
  • Symmetry Detection (for Virus Maps)
  • Boundary-free Image Skeletonization
VolRover provides a user interface to a number of CVC software packages including Segmentation, Contrast Enhancement, and Motif Elucidation.


Software Usage

See the VolRover User Guide.

  • Z. Yu, C. Bajaj
    A Fast and Adaptive Algorithm for Image Contrast Enhancement
    Procedings of 2004 IEEE International Conference on Image Processing (ICIP’04), Volume 2, Oct. 24-27 2004, Pages 1001-1004, Singapore.
  • W. Jiang, M. Baker, Q. Wu, C. Bajaj, W. Chiu
    Applications of Bilateral Denoising Filter in Biological Electron Microscopy
    Journal of Structural Biology, Volume 144, Issues 1-2, October 2003, Pages 114-122.
  • S. Park, C. Bajaj, G. Gladish
    Artery-Vein Separation of Human Vasculature from 3D Thoracic CT Angio Scans
    CompIMAGE. Coimbra, Portugal. October 20-21, 2006.
  • M. Baker, Z. Yu, W. Chiu, C. Bajaj
    Automated Segmentation of Molecular Subunits in Electron Cryomicroscopy Density Maps Journal of Structural Biology, 2006. Accepted.
  • Z. Yu, C. Bajaj
    Automatic Ultrastructure Segmentation of Reconstructed CryoEM Maps of Icosahedral Viruses
    IEEE Transactions on Image Processing: Special Issue on Molecular and Cellular Bioimaging, 2005 Sep;14(9):1324-37.
  • Z. Yu, C. Bajaj
    Anisotropic Vector Diffusion in Image Smoothing
    Proceeding of the 9th IEEE International Conference on Image Processing, vol. 1, pp. 828-831, (Published by IEEE CS Press), Rochester, New York, September 22-25, 2002.
  • Z. Yu, C. Bajaj
    Normalized Gradient Vector Diffusion and Image Segmentation
    Procedings of the 7th European Conference on Computer Vision (LNCS 2352), vol. 3, pp. 517-530, (Published by Springer Press), Copenhagen, Denmark, May 28-31, 2002.
  • Z. Yu, C. Bajaj
    Computational Approaches for Automatic Structural Analysis of Large Bio-molecular Complexes
    Accepted for publication in IEEE/ACM Transactions on Computational Biology and Bioinformatics, 2007.
  • C. Bajaj, Z. Yu
    Geometric and Signal Processing of Reconstructed 3D Maps of Molecular Complexes
    Handbook of Computational Molecular Biology, Edited by S. Aluru, Chapman & Hal l/CRC Press, Computer and Information Science Series, December 21, 2005, ISBN: 1584884061.
  • C. Bajaj, E. Coyle, K. Lin
    Arbitrary Topology Shape Reconstruction from Planar Cross Sections
    Graphical Models and Image Processing, 58:6, (1996), 524-543.
  • Wilson, Van Gelder, Wilhelms
    Direct Volume Rendering via 3D Textures
    Technical Report UCSC-CRL-94-19. Univ. of Calif. Santa Cruz. 1994
  • Lorensen, Cline
    Marching Cubes: A High Resolution 3D Surface Construction Algorithm
    Proceedings of the 14th annual conference on Computer graphics and interactive techniques
  • C. Bajaj, V.Pascucci, and D.Schikore
    The Contour Spectrum
    Proceedings of the 1997 IEEE Visualization Conference,167-173, October 1997 Phoeniz, Arizona
  • C. Bajaj, M. van Kreveld, R. van Oostrum, V. Pascucci, and D. Schikore
    Contour Trees and Small Seed Sets for Isosurface Generation
    Topological Data Structures for Surfaces, Chap5, pg 71 - 86, 2004 ed. by S. Rana, John Wiley & Sons, Ltd, 2004
  • C. Bajaj, Z. Yu, M. Auer
    Volumetric Feature Extraction and Visualization of Tomographic Molecular Imaging
    Journal of Structural Biology, Volume 144, Issues 1-2, October 2003, Pages 132-143.