| Records |
| Author |
Cristina Cañero; Petia Radeva |
| Title |
Vesselness enhancement diffusion |
Type |
Journal Article |
| Year |
2003 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
24 |
Issue |
16 |
Pages  |
3141–3151 |
| Keywords |
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| Abstract |
IF: 0.809 |
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| Notes |
MILAB |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ CaR2003 |
Serial |
371 |
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| Author |
Ernest Valveny; Enric Marti |
| Title |
A model for image generation and symbol recognition through the deformation of lineal shapes |
Type |
Journal Article |
| Year |
2003 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
24 |
Issue |
15 |
Pages |
2857-2867 |
| Keywords |
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| Abstract |
We describe a general framework for the recognition of distorted images of lineal shapes, which relies on three items: a model to represent lineal shapes and their deformations, a model for the generation of distorted binary images and the combination of both models in a common probabilistic framework, where the generation of deformations is related to an internal energy, and the generation of binary images to an external energy. Then, recognition consists in the minimization of a global energy function, performed by using the EM algorithm. This general framework has been applied to the recognition of hand-drawn lineal symbols in graphic documents. |
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| Publisher |
Elsevier Science Inc. |
Place of Publication |
New York, NY, USA |
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| ISSN |
0167-8655 |
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| Notes |
DAG; IAM |
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no |
| Call Number |
IAM @ iam @ VAM2003 |
Serial |
1653 |
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| Author |
M. Bressan; Jordi Vitria |
| Title |
Nonparametric Discriminant Analysis and Nearest Neighbor Classification |
Type |
Journal Article |
| Year |
2003 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
24 |
Issue |
15 |
Pages |
2743–2749 |
| Keywords |
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| Abstract |
IF: 0.809 |
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OR;MV |
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no |
| Call Number |
BCNPCL @ bcnpcl @ BrV2003b |
Serial |
367 |
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| Author |
David Guillamet; Jordi Vitria; B. Shiele |
| Title |
Introducing a weighted non-negative matrix factorization for image classification |
Type |
Journal Article |
| Year |
2003 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
24 |
Issue |
14 |
Pages |
2447–2454 |
| Keywords |
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| Abstract |
IF: 0.809 |
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OR;MV |
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no |
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BCNPCL @ bcnpcl @ GVS2003 |
Serial |
382 |
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| Author |
David Guillamet; Jordi Vitria |
| Title |
Evaluation of distance metrics for recognition based on non-negative matrix factorization |
Type |
Journal Article |
| Year |
2003 |
Publication |
Pattern Recognition Letters |
Abbreviated Journal |
PRL |
| Volume |
24 |
Issue |
9-10 |
Pages |
1599 –1605 |
| Keywords |
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| Abstract |
IF: 0.809 |
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| Notes |
OR;MV |
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no |
| Call Number |
BCNPCL @ bcnpcl @ GuV2003b |
Serial |
380 |
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| Author |
Daniel Ponsa; Robert Benavente; Felipe Lumbreras; Judit Martinez; Xavier Roca |
| Title |
Quality control of safety belts by machine vision inspection for real-time production |
Type |
Journal Article |
| Year |
2003 |
Publication |
Optical Engineering (IF: 0.877) |
Abbreviated Journal |
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| Volume |
42 |
Issue |
4 |
Pages |
1114-1120 |
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| Publisher |
SPIE |
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| Notes |
ADAS;ISE;CIC |
Approved |
no |
| Call Number |
ADAS @ adas @ PRL2003 |
Serial |
399 |
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| Author |
Debora Gil; Petia Radeva |
| Title |
Curvature Vector Flow to Assure Convergent Deformable Models for Shape Modelling |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Energy Minimization Methods In Computer Vision And Pattern Recognition |
Abbreviated Journal |
LNCS |
| Volume |
2683 |
Issue |
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Pages |
357-372 |
| Keywords |
Initial condition; Convex shape; Non convex analysis; Increase; Segmentation; Gradient; Standard; Standards; Concave shape; Flow models; Tracking; Edge detection; Curvature |
| Abstract |
Poor convergence to concave shapes is a main limitation of snakes as a standard segmentation and shape modelling technique. The gradient of the external energy of the snake represents a force that pushes the snake into concave regions, as its internal energy increases when new inexion points are created. In spite of the improvement of the external energy by the gradient vector ow technique, highly non convex shapes can not be obtained, yet. In the present paper, we develop a new external energy based on the geometry of the curve to be modelled. By tracking back the deformation of a curve that evolves by minimum curvature ow, we construct a distance map that encapsulates the natural way of adapting to non convex shapes. The gradient of this map, which we call curvature vector ow (CVF), is capable of attracting a snake towards any contour, whatever its geometry. Our experiments show that, any initial snake condition converges to the curve to be modelled in optimal time. |
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Springer, Berlin |
Place of Publication |
Lisbon, PORTUGAL |
Editor |
Springer, B. |
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Original Title |
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Series Title |
Lecture Notes in Computer Science |
Abbreviated Series Title |
LNCS |
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Edition |
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| ISSN |
0302-9743 |
ISBN |
3-540-40498-8 |
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| Notes |
IAM;MILAB |
Approved |
no |
| Call Number |
IAM @ iam @ GIR2003b |
Serial |
1535 |
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| Author |
Angel Sappa; Niki Aifanti; Sotiris Malassiotis; Michael G. Strintzis |
| Title |
Monocular 3D Human Body Reconstruction Towards Depth Augmentation of Television Sequences |
Type |
Conference Article |
| Year |
2003 |
Publication |
IEEE International Conference on Image Processing, Barcelona, Spain, September 2003 |
Abbreviated Journal |
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Issue |
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Pages |
325-328 |
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| Address |
Barcelona |
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| Notes |
ADAS |
Approved |
no |
| Call Number |
ADAS @ adas @ SAM2003 |
Serial |
418 |
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| Author |
Fernando Vilariño; Petia Radeva |
| Title |
Cardiac Segmentation with Discriminant Active Contours |
Type |
Book Chapter |
| Year |
2003 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
211–217 |
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| Abstract |
Dynamic tracking of heart moving is one relevant target in medical imag- ing and can be helpful for analyzing heart dynamics in the study of several cardiac diseases. For this aim, a previous segmentation problem of such structures is stated, based on certain relevant features (like edges or intensity levels, textures, etc.) Clas- sical active models have been used, but they fail when overlapping structures or not well-defined contours are present. Automatic feature learning systems may be a pow- erful tool. Discriminant active contours present optimal results in this kind of problem. They are a kind of deformable models that converge to an optimal object segmenta- tion that dynamically adapts to the object contour. The feature space is designed from a filter bank in order to guarantee the search and learning of the set of relevant fea- tures for optimal classification on each part of the object. Tracking of target evolution is obtained through the whole set of images, using information from the actual and previous stages. Feedback systems are implemented to guarantee the minimum well- separable classification set in each segmentation step. Our implementation has been proved with several series of Magnetic Resonance with improved results in segmenta- tion in comparison to previous methods. |
| Address |
Palma de Mallorca |
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| Publisher |
IOS Press |
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Conference |
CCIA |
| Notes |
MV;MILAB;SIAI |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ ViR2003; IAM @ iam @ VRa2003 |
Serial |
426 |
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| Author |
Jaume Garcia; David Rotger; Francesc Carreras; R.Leta; Petia Radeva |
| Title |
Contrast echography segmentation and tracking by trained deformable models |
Type |
Conference Article |
| Year |
2003 |
Publication |
Proc. Computers in Cardiology |
Abbreviated Journal |
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| Volume |
30 |
Issue |
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Pages |
173-176 |
| Keywords |
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| Abstract |
The objective of this work is to segment the human left ventricle myocardium (LVM) in contrast echocardiography imaging and thus track it along a cardiac cycle in order to extract quantitative data about heart function. Ultrasound images are hard to work with due to their speckle appearance. To overcome this we report the combination of active contour models (ACM) or snakes and active shape models (ASM). The ability of ACM in giving closed and smooth curves in addition to the power of the ASM in producing shapes similar to the ones learned, evoke to a robust algorithm. Meanwhile the snake is attracted towards image main features, ASM acts as a correction factor. The algorithm was tested independently on 180 frames and satisfying results were obtained: in 95% the maximum difference between automatic and experts segmentation was less than 12 pixels. |
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Centre de Visió per Computador – Dept. Informàtica, UAB Edifici O – Campus UAB, 08193 Bellater |
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| ISSN |
0276-6547 |
ISBN |
0-7803-8170-X |
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| Notes |
IAM;MILAB |
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no |
| Call Number |
IAM @ iam @ GRC2003 |
Serial |
1512 |
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| Author |
Agnes Borras; Francesc Tous; Josep Llados; Maria Vanrell |
| Title |
High-Level Clothes Description Based on Color-Texture and Structural Features |
Type |
Book Chapter |
| Year |
2003 |
Publication |
Lecture Notes in Computer Science |
Abbreviated Journal |
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| Volume |
2652 |
Issue |
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Pages |
108–116 |
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| Abstract |
This work is a part of a surveillance system where content- based image retrieval is done in terms of people appearance. Given an image of a person, our work provides an automatic description of his clothing according to the colour, texture and structural composition of its garments. We present a two-stage process composed by image segmentation and a region-based interpretation. We segment an image by modelling it due to an attributed graph and applying a hybrid method that follows a split-and-merge strategy. We propose the interpretation of five cloth combinations that are modelled in a graph structure in terms of region features. The interpretation is viewed as a graph matching with an associated cost between the segmentation and the cloth models. Fi- nally, we have tested the process with a ground-truth of one hundred images. |
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Springer-Verlag |
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| Notes |
DAG;CIC |
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no |
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CAT @ cat @ BTL2003a |
Serial |
368 |
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| Author |
Judit Martinez; Eva Costa; P. Herreros; F. Javier Sanchez; Ramon Baldrich |
| Title |
A Modular and Scalable Architecture for PC-Based Real-Time Vision Systems |
Type |
Journal Article |
| Year |
2003 |
Publication |
Real–Time Imaging, (IF: 0.512) |
Abbreviated Journal |
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| Volume |
9 |
Issue |
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Pages |
99-112 |
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CIC |
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no |
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CAT @ cat @ MCH2003b |
Serial |
394 |
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| Author |
Anna Salvatella; Maria Vanrell; Juan J. Villanueva |
| Title |
Texture Description based on Subtexture Components, 3rd International Workshop on Texture Syntesis and Analysis |
Type |
Conference Article |
| Year |
2003 |
Publication |
3rd International Workshop on Texture Synthesis and Analysis, |
Abbreviated Journal |
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Issue |
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Pages |
77–82 |
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| Address |
Nice |
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ISBN |
1-904410-11-1 |
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CIC |
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no |
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CAT @ cat @ SVV2003 |
Serial |
422 |
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| Author |
David Rotger; Misael Rosales; Jaume Garcia; Oriol Pujol ; J. Mauri; Petia Radeva |
| Title |
Active Vessel: A New Multimedia Workstation for Intravascular Ultrasound and Angiography Fusion |
Type |
Journal Article |
| Year |
2003 |
Publication |
Computers in Cardiology |
Abbreviated Journal |
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| Volume |
30 |
Issue |
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Pages |
65-68 |
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| Abstract |
AcriveVessel is a new multimedia workstation which enables the visualization, acquisition and handling of both image modalities, on- and ofline. It enables DICOM v3.0 decompression and browsing, video acquisition,repmduction and storage for IntraVascular UltraSound (IVUS) and angiograms with their corresponding ECG,automatic catheter segmentation in angiography images (using fast marching algorithm). BSpline models definition for vessel layers on IVUS images sequence and an extensively validated tool to fuse information. This approach defines the correspondence of every IVUS image with its correspondent point in the angiogram and viceversa. The 3 0 reconstruction of the NUS catheterhessel enables real distance measurements as well as threedimensional visualization showing vessel tortuosity in the space. |
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| Notes |
IAM;MILAB;HuPBA |
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no |
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IAM @ iam @ RRG2003 |
Serial |
1647 |
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| Author |
Gemma Sanchez; Ernest Valveny; Josep Llados; Enric Marti; Oriol Ramos Terrades; N.Lozano; Joan Mas |
| Title |
A system for virtual prototyping of architectural projects |
Type |
Conference Article |
| Year |
2003 |
Publication |
Proceedings of Fifth IAPR International Workshop on Pattern Recognition |
Abbreviated Journal |
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Issue |
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Pages |
65-74 |
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| Notes |
DAG;IAM |
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no |
| Call Number |
IAM @ iam @ SVL2003 |
Serial |
1650 |
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