| Records |
| Author |
Ernest Valveny; Philippe Dosch |
| Title |
Symbol Recognition Contest: A Synthesis |
Type |
Miscellaneous |
| Year |
2004 |
Publication |
Graphics Recognition: Recent Advances and Perspectives, J. Llados, Y.B. Kwon (Eds.), Lecture Notes in Computer Science, 3088:368–386, ISBN: 3–540–22478–5 |
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DAG |
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no |
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DAG @ dag @ VaD2004b |
Serial |
501 |
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| Author |
Oriol Ramos Terrades; Ernest Valveny |
| Title |
Indexing Technical Symbols Using Ridgelets Transform |
Type |
Miscellaneous |
| Year |
2004 |
Publication |
Graphics Recognition: Recent Advances and Perspectives, J. Llados, Y.B. Kwon (Eds.), Lecture Notes in Computer Science, 3088:177–187, ISBN: 3–540–22478–5 |
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DAG |
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no |
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DAG @ dag @ VaD2004c |
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503 |
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| Author |
Carme Julia |
| Title |
Motion segmentation through factorization. Application to night driving assistance |
Type |
Report |
| Year |
2004 |
Publication |
CVC Technical Report #79 |
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CVC (UAB) |
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no |
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Admin @ si @ 38169 |
Serial |
506 |
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| Author |
Raul Chaves |
| Title |
Sistema de identificacion mediante huellas dactilares |
Type |
Report |
| Year |
2004 |
Publication |
CVC Technical Report #81 |
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CVC (UAB) |
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no |
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Admin @ si @ Cha2004 |
Serial |
507 |
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| Author |
Oriol Martinez |
| Title |
Semantic Retrieval of Memory Color Content |
Type |
Report |
| Year |
2004 |
Publication |
CVC Technical Report #80 |
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Approved |
no |
| Call Number |
Admin @ si @ 38047 |
Serial |
508 |
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| Author |
Jordi Vitria; Petia Radeva; I. Aguilo |
| Title |
Recent Advances in Artificial Intelligence Research and Development |
Type |
Book Chapter |
| Year |
2004 |
Publication |
Frontiers in Artificial Intelligence and Applications, 113, J. Vitria, P. Radeva, I. Aguilo (Eds.), ISBN: 1–58603–466–9 |
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Amsterdam |
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| Notes |
OR;MILAB;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ VRA2004 |
Serial |
509 |
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| Author |
David Masip; Jordi Vitria |
| Title |
Boosted Linear Projections for Discriminant Analysis |
Type |
Miscellaneous |
| Year |
2004 |
Publication |
CCIA 2004, 45–52, ISBN: 1–58603–466–9 |
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IOS Press |
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OR;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ MaV2004c |
Serial |
510 |
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| Author |
Oriol Pujol |
| Title |
A semi-Supervised Statistical Framework and Generative Snakes for IVUS Analysis |
Type |
Book Whole |
| Year |
2004 |
Publication |
PhD Thesis, Universitat Autonoma de Barcelona-CVC |
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CVC (UAB), Bellaterra |
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Ph.D. thesis |
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Editor |
Petia Radeva |
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HuPBA;MILAB |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ Puj2004 |
Serial |
512 |
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| Author |
Jaume Amores; Petia Radeva |
| Title |
Registration and retrieval of medical images. Application to IVUS |
Type |
Report |
| Year |
2004 |
Publication |
CVC Technical Report #77 |
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MILAB |
Approved |
no |
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ADAS @ adas @ AmR2004 |
Serial |
513 |
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| Author |
Petia Radeva; Jordi Vitria |
| Title |
Corkinspect: Statistical Learning of Natural Material |
Type |
Journal |
| Year |
2004 |
Publication |
Italian Beverage Technology, 13(38):11–18 |
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OR;MILAB;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ RaV2004b |
Serial |
514 |
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| Author |
Josep Llados; Young-Bin Kwon |
| Title |
Graphics Recognition. Recent Advances and Perspectives |
Type |
Miscellaneous |
| Year |
2004 |
Publication |
LNCS 3080, ISBN: 3–540–22478–5 |
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Springer-Verlag |
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DAG |
Approved |
no |
| Call Number |
DAG @ dag @ LlK2004 |
Serial |
515 |
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| Author |
Jaume Garcia; Petia Radeva; Francesc Carreras |
| Title |
Combining Spectral and Active Shape methods to Track Tagged MRI |
Type |
Book Chapter |
| Year |
2004 |
Publication |
Recent Advances in Artificial Intelligence Research and Development |
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Pages |
37-44 |
| Keywords |
MR; tagged MR; ASM; LV segmentation; motion estimation. |
| Abstract |
Tagged magnetic resonance is a very usefull and unique tool that provides a complete local and global knowledge of the left ventricle (LV) motion. In this article we introduce a method capable of tracking and segmenting the LV. Spectral methods are applied in order to obtain the so called HARP images which encode information about movement and are the base for LV point-tracking. For segmentation we use Active Shapes (ASM) that model LV shape variation in order to overcome possible local misplacements of the boundary. We finally show experiments on both synthetic and real data which appear to be very promising. |
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IOS Press |
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CCIA |
| Notes |
IAM;MILAB |
Approved |
no |
| Call Number |
IAM @ iam @ GRC2004 |
Serial |
1488 |
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| Author |
Jaume Garcia |
| Title |
Generalized Active Shape Models Applied to Cardiac Function Analysis |
Type |
Report |
| Year |
2004 |
Publication |
CVC Technical Report |
Abbreviated Journal |
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| Volume |
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Issue |
78 |
Pages |
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Cardiac Analysis; Deformable Models; Active Contour Models; Active Shape Models; Tagged MRI; HARP; Contrast Echocardiography. |
| Abstract |
Medical imaging is very useful in the assessment and treatment of many diseases. To deal with the great amount of data provided by imaging scanners and extract quantitative information that physicians can interpret, many analysis algorithms have been developed. Any process of analysis always consists of a first step of segmenting some particular structure. In medical imaging, structures are not always well defined and suffer from noise artifacts thus, ordinary segmentation methods are not well suited. The ones that seem to give better results are those based on deformable models. Nevertheless, despite their capability of mixing image features together with smoothness constraints that may compensate for image irregularities, these are naturally local methods, i. e., each node of the active contour evolve taking into account information about its neighbors and some other weak constraints about flexibility and smoothness, but not about the global shape that they should find. Due to the fact that structures to be segmented are the same for all cases but with some inter and intra-patient variation, the incorporation of a priori knowledge about shape in the segmentation method will provide robustness to it. Active Shape Models is an algorithm based on the creation of a shape model called Point Distribution Model. It performs a segmentation using only shapes similar than those previously learned from a training set that capture most of the variation presented by the structure. This algorithm works by updating shape nodes along a normal segment which often can be too restrictive. For this reason we propose a generalization of this algorithm that we call Generalized Active Shape Models and fully integrates the a priori knowledge given by the Point Distribution Model with deformable models or any other appropriate segmentation method. Two different applications to cardiac imaging of this generalized method are developed and promising results are shown. |
| Address |
CVC (UAB) |
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Thesis |
Master's thesis |
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IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ Gar2004 |
Serial |
1513 |
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| Author |
Debora Gil |
| Title |
Geometric Differential Operators for Shape Modelling |
Type |
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 |
| Publisher |
Ediciones Graficas Rey |
Place of Publication |
Barcelona (Spain) |
Editor |
Jordi Saludes i Closa;Petia Radeva |
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ISBN |
84-933652-0-3 |
Medium |
prit |
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IAM; |
Approved |
no |
| Call Number |
IAM @ iam @ GIL2004 |
Serial |
1517 |
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| Author |
Debora Gil; Petia Radeva |
| Title |
Inhibition of False Landmarks |
Type |
Book Chapter |
| Year |
2004 |
Publication |
Recent Advances in Artificial Intelligence Research and Development |
Abbreviated Journal |
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233-244 |
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We argue that a corner detector should be based on the degree of continuity of the tangent vector to the image level sets, work on the image domain and need no assumptions on neither the image local structure nor the particular geometry of the corner/junction. An operator measuring the degree of differentiability of the projection matrix on the image gradient fulfills the above requirements. Its high sensitivity to changes in vector directions makes it suitable for landmark location in real images prone to need smoothing to reduce the impact of noise. Because using smoothing kernels leads to corner misplacement, we suggest an alternative fake response remover based on the receptive field inhibition of spurious details. The combination of both orientation discontinuity detection and noise inhibition produce our Inhibition Orientation Energy (IOE) landmark locator. |
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IOS Press |
Place of Publication |
Barcelona (Spain) |
Editor |
al, J.V. et |
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IAM;MILAB |
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no |
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IAM @ iam @ GiR2004a |
Serial |
1533 |
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