SQ-Map: Efficient Layered Collision Detection and Haptic Rendering

K. Moustakas, D. Tzovaras and M.G. Strintzis
IEEE Transactions on Visualization and Computer Graphics, accepted for publication.

    3D Shape-Structure Comparison Method for Protein Classification

P. Daras, D. Zarpalas, A. Axenopoulos, D. Tzovaras and M. G. Strintzis
IEEE/ACM Transactions on Computational Biology and Bioinformatics, accepted for publication.

Efficient 3D Model Search and Retrieval Using Generalized 3D Radon Transforms
Measuring the similarity between three-dimensional (3-D) objects is a challenging problem, with applications in computer vision, molecular biology, computer graphics, and many other areas. This paper describes a novel method for 3-D model content-based search based on the 3-D Generalized Radon Transform and a querying by-3-D-model approach. A set of descriptor vectors is extracted using the Radial Integration Transform (RIT) and the Spherical Integration Transform (SIT), which represent significant shape characteristics. After the proper alignment of the models, descriptor vectors are produced which are invariant in terms of translation, scaling and rotation. Experiments were performed using three different databases and comparing the proposed method with those most commonly cited in the literature. Experimental results show that the proposed method is adequately satisfactory in terms of both precision versus recall and time needed for retrieval, and that it can be used for 3-D model search and retrieval in a highly efficient manner.

P. Daras, D. Zarpalas, D.Tzovaras and M.G.Strintzis
IEEE Trans. on Multimedia, accepted for publication.

    Stereoscopic Video Generation Based on Efficient Structure and Motion Estimation from a Monoscopic Image Sequence

K. Moustakas, D.Tzovaras, and M.G.Strintzis
IEEE Transactions on Circuits and Systems for Video Technology, Vol. 15, No. 8, pp. 1065 - 1073, August 2005.

    Design and Implementation of Haptic Virtual Environments for the Training of Visually Impaired
D.Tzovaras, G.Nikolakis, G.Fergadis, S.Malasiotis and M.Stavrakis
IEEE Trans. on Neural Systems and Rehabilitation Engineering, Vol. 12, No. 2, pp.266-278, June 2004.
    An Efficient Algorithm for the Enhancement of JPEG Coded Images
G.A.Triantafyllidis, M.Varnuska, D.Sampson, D.Tzovaras and M.G.Strintzis
Computers & Graphics: An International Journal of Systems & Applications in Computer Graphics,
vol. 27(4), pp. 529-534, August 2003.
    Use of Depth and Color Eigenfaces for Face Recognition
F.Tsalakanidou, D.Tzovaras and M.G.Strintzis
Elsevier Mathematics & Computer Science: Pattern Recognition Letters, vol. 24/9-10, June 2003.
    Rigid and Non-Rigid 3D Motion Estimation from Multiview Image Sequences
N.Ploskas, D. Simitopoulos, D.Tzovaras, G.A.Triantafyllidis and M.G.Strintzis
Elsevier Signal Processing: Image Communication Journal, Vol. 18, Issue 3, pp.185-202, March 2003.
    Blocking Artifact Detection and Reduction in Compressed Data
G.A.Triantafyllidis, D.Tzovaras and M.G.Strintzis
IEEE Trans. on Circuits and Systems for Video Technology, Vol.12, No.10, pp.877-890, October 2002.
    A Bayesian Approach for Segmentation in Stereo Image Sequences
G.A.Triantafyllidis, D.Tzovaras and M.G.Strintzis
EURASIP Journal on Applied Signal Processing (JASP), Special Issue on Signal Processing for 3D Imaging and Virtual Reality, Vol. 2002, No. 10, October 2002.
    Combined Frequency and Spatial Domain Algorithm for the Removal of Blocking Artifacts
G.Triantafyllidis, D.Tzovaras, D.Sampson and M.G.Strintzis
EURASIP Journal on Applied Signal Processing (JASP), Special Issue on Image Analysis for Multimedia Interactive Services, Part II, vol. 2002(6), pp. 601-612, June 2002

Hierarchical Representation and Coding of Surfaces using 3D Polygon Meshes
I. Kompatsiaris, D.Tzovaras and M.G.Strintzis
IEEE Trans. on Image Processing, vol 10, no. 8, pp.1133-1151, August 2001.

Rate-distortion Optimal Fast Thresholding for MPEG-2 Image Sequence
D.Tzovaras, N.V.Boulgouris, K.Argyraki and M.G.Strintzis
European Transactions on Telecommunications, Vol. 12, No. 3, pp.189-195, May 2001.

Lossless Image Compression Based on Optimal Prediction, Adaptive Lifting and Conditional Arithmetic Coding
N.V.Boulgouris, D.Tzovaras and M.G.Strintzis
IEEE Trans.on Image Processing, Vol.10, No.1, pp. 1-14, January 2001.

Lossless Coding of Multichannel Signals Using Optimal Vector Hierarchical Decomposition
D.Tzovaras and M.G.Strintzis
IEEE Trans. on Image Processing, Vol. 9, No. 10, pp.1811-1817, October 2000.

Occlusion and Visible Backgroumd and Foreground areas in Stereo: A Bayesian Approach
G.A.Triantafyllidis, D.Tzovaras and M.G.Strintzis
IEEE Trans. on Circuits and Systems for Video Technology, Special Issue on 3D Video Technology, Vol.10, No.4, pp.563-576, June 2000.

Deformable Boundary Detection of Stents in Angiographic Images
I.Kompatsiaris, D.Tzovaras, V.Koutkias and M.G.Strintzis
IEEE Trans. on Medical Imaging, Vol. 19, No.6, pp. 652-662, June 2000.

Optimal Construction of Reduced Pyramids for Lossless and Progressive Image Coding
D.Tzovaras and M.G.Strintzis
IEEE Trans. on Circuits and Systems II, Vol.47, No.4, pp.332-340, April 2000.

Rigid 3D Motion Estimation Using Neural Networks and Initially Estimated 2D Motion Data
D.Tzovaras, N.Ploskas, M.G.Strintzis
IEEE Trans. on Circuits and Systems for Video Technology, Vol.10, No.1, pp.158-166, February 2000.