Records |
Author |
Debora Gil |
Title |
Geometric Differential Operators for Shape Modelling |
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Book Whole |
Year |
2004 |
Publication |
PhD Thesis, Universitat Autonoma de Barcelona-CVC |
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Medical imaging feeds research in many computer vision and image processing fields: image filtering, segmentation, shape recovery, registration, retrieval and pattern matching. Because of their low contrast changes and large variety of artifacts and noise, medical imaging processing techniques relying on an analysis of the geometry of image level sets rather than on intensity values result in more robust treatment. From the starting point of treatment of intravascular images, this PhD thesis ad- dresses the design of differential image operators based on geometric principles for a robust shape modelling and restoration. Among all fields applying shape recovery, we approach filtering and segmentation of image objects. For a successful use in real images, the segmentation process should go through three stages: noise removing, shape modelling and shape recovery. This PhD addresses all three topics, but for the sake of algorithms as automated as possible, techniques for image processing will be designed to satisfy three main principles: a) convergence of the iterative schemes to non-trivial states avoiding image degeneration to a constant image and representing smooth models of the originals; b) smooth asymptotic behav- ior ensuring stabilization of the iterative process; c) fixed parameter values ensuring equal (domain free) performance of the algorithms whatever initial images/shapes. Our geometric approach to the generic equations that model the different processes approached enables defining techniques satisfying all the former requirements. First, we introduce a new curvature-based geometric flow for image filtering achieving a good compromise between noise removing and resemblance to original images. Sec- ond, we describe a new family of diffusion operators that restrict their scope to image level curves and serve to restore smooth closed models from unconnected sets of points. Finally, we design a regularization of snake (distance) maps that ensures its smooth convergence towards any closed shape. Experiments show that performance of the techniques proposed overpasses that of state-of-the-art algorithms. |
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Ph.D. thesis |
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Ediciones Graficas Rey |
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Barcelona (Spain) |
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Jordi Saludes i Closa;Petia Radeva |
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84-933652-0-3 |
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IAM; |
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IAM @ iam @ GIL2004 |
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1517 |
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Author |
Jordi Gonzalez |
Title |
Human Sequence Evaluation: the Key-frame Approach |
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Book Whole |
Year |
2004 |
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PhD Thesis, Universitat Autonoma de Barcelona-CVC |
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Ph.D. thesis |
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Xavier Roca;Javier Varona |
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ISE @ ise @ Gon2004 |
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362 |
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Author |
Robert Benavente; Maria Vanrell |
Title |
Fuzzy Colour Naming Based on Sigmoid Membership Functions. |
Type |
Miscellaneous |
Year |
2004 |
Publication |
CGIV 2004 Second European Conference on Colour in Graphics, Imaging and Vision, 135:139 |
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Aachen (Germany) |
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CAT @ cat @ BeV2004 |
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441 |
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Author |
M. Bressan; David Guillamet; Jordi Vitria |
Title |
Multiclass Object Recognition using Class-Conditional Independent Component Analisis |
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2004 |
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Cybernetics and Systems, 35/1:35–61 (IF: 0.768) |
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OR;MV |
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BCNPCL @ bcnpcl @ BGV2004 |
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442 |
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Author |
David Guillamet |
Title |
Statistical Local Appearance Models for Object Recognition |
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Book Whole |
Year |
2004 |
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PhD Thesis, Universitat Autonoma de Barcelona-CVC |
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Bellaterra |
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Ph.D. thesis |
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Jordi Vitria |
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no |
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Admin @ si @ Gui2004 |
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444 |
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Author |
Josep Llados; Gemma Sanchez |
Title |
Graph Matching vs. Graph Parsing in Graphics Recognition: A Combined Approach |
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Journal |
Year |
2004 |
Publication |
International Journal of Pattern Recognition and Artificial Intelligence |
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IJPRAI |
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18 |
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3 |
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455–473 |
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DAG; IF: 0.588 |
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no |
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DAG @ dag @ LlS2004 |
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445 |
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Author |
David Masip; Jordi Vitria |
Title |
Real Time Face Detection and Verification for Uncontrolled Environments |
Type |
Miscellaneous |
Year |
2004 |
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Second COST 275 Workshop Biometrics on the Internet: Fundamentals, Advances and Applications, 55–58. |
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Vigo |
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OR;MV |
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no |
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BCNPCL @ bcnpcl @ MaV2004a |
Serial |
446 |
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Author |
David Masip; Jordi Vitria |
Title |
Object Recognition using Boosted Adaptive Features. |
Type |
Miscellaneous |
Year |
2004 |
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ECOVISION Early Cognitive Vision Workshop |
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OR;MV |
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no |
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BCNPCL @ bcnpcl @ MaV2004b |
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447 |
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Author |
David Masip; M. Bressan; Jordi Vitria |
Title |
Classifier Combination Applied to Real Time Face Detection and Classification |
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Miscellaneous |
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2004 |
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AVR2004 |
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Barcelona |
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OR;MV |
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no |
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BCNPCL @ bcnpcl @ MBV2004a |
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448 |
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Author |
David Masip; Jordi Vitria |
Title |
Classifier Combination Applied to Real Time Face Detection and Classification. |
Type |
Book Chapter |
Year |
2004 |
Publication |
Recerca Automatica, Visio i Robotica, Ed. UPC, A. Grau, V. Puig (Eds.), 345–353, ISBN 84–7653–844–8 |
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OR;MV |
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BCNPCL @ bcnpcl @ MBV2004b |
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449 |
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Author |
Xavier Otazu; Maria Vanrell |
Title |
Building Perceived Colour Images. |
Type |
Miscellaneous |
Year |
2004 |
Publication |
CGIV 2004 Second European Conference on Colour in Graphics, Imaging, and Vision, 140:145 |
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Aachen (Germany) |
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CAT @ cat @ OtV2004 |
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450 |
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Author |
Xavier Otazu; M. Ribo; J.M. Paredes; M. Peracaula; J. Nuñez |
Title |
Multiresolution approach for period determination on unevenly sampled data |
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2004 |
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Monthly Notices of the Royal Astronomical Society, 351:251–219 (IF: 5.238) |
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no |
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CAT @ cat @ ORP2004 |
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451 |
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Author |
Francesc Tous; Maria Vanrell; Ramon Baldrich |
Title |
Exploring Colour Constancy Solutions. |
Type |
Miscellaneous |
Year |
2004 |
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CGIV 2004 Second European Conference on Colour in Graphics, Imaging, and Vision, 24:29 |
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Aachen (Germany) |
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CAT @ cat @ TVB2004 |
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452 |
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Author |
Maria Vanrell; Ramon Baldrich; Anna Salvatella; Robert Benavente; Francesc Tous |
Title |
Induction operators for a computational colour-texture representation |
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2004 |
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Computer Vision and Image Understanding, 94(1–3):92–114, ISSN: 1077–3142 (IF: 0.651) |
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CAT @ cat @ VBS2004 |
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453 |
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Author |
Angel Sappa |
Title |
Automatic Extraction of Planar Projections from Panoramic Range Images |
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Miscellaneous |
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2004 |
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IEEE Int. Symp. on 3D Data Processing, Visualization and Transmission |
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Thessaloniki (Greece) |
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ADAS @ adas @ Sap2004a |
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454 |
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