| Records |
| Author |
Aura Hernandez-Sabate; Debora Gil; Petia Radeva; E.N.Nofrerias |
| Title |
Anisotropic processing of image structures for adventitia detection in intravascular ultrasound images |
Type |
Conference Article |
Year  |
2004 |
Publication |
Proc. Computers in Cardiology |
Abbreviated Journal |
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| Volume |
31 |
Issue |
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Pages |
229-232 |
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| Abstract |
The adventitia layer appears as a weak edge in IVUS images with a non-uniform grey level, which difficulties its detection. In order to enhance edges, we apply an anisotropic filter that homogenizes the grey level along the image significant structures (ridges, valleys and edges). A standard edge detector applied to the filtered image yields a set of candidate points prone to be unconnected. The final model is obtained by interpolating the former line segments along the tangent direction to the level curves of the filtered image with an anisotropic contour closing technique based on functional extension principles |
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Chicago (USA) |
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IAM; MILAB |
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no |
| Call Number |
IAM @ iam @ HGR2004 |
Serial |
1555 |
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| Author |
Oriol Rodriguez-Leor; J. Mauri; Eduard Fernandez-Nofrerias; Antonio Tovar; Vicente del Valle; Aura Hernandez-Sabate; Debora Gil; Petia Radeva |
| Title |
Utilización de la Estructura de los Campos Vectoriales para la Detección de la Adventicia en Imágenes de Ecografía Intracoronaria |
Type |
Journal Article |
| Year |
2004 |
Publication |
Revista Internacional de Enfermedades Cardiovasculares Revista Española de Cardiología |
Abbreviated Journal |
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| Volume |
57 |
Issue |
2 |
Pages |
100 |
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SEC |
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IAM;MILAB |
Approved |
no |
| Call Number |
IAM @ iam @ RMF2004 |
Serial |
1642 |
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| Author |
Fernando Vilariño; Debora Gil; Petia Radeva |
| Title |
A Novel FLDA Formulation for Numerical Stability Analysis |
Type |
Book Chapter |
| Year |
2004 |
Publication |
Recent Advances in Artificial Intelligence Research and Development |
Abbreviated Journal |
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| Volume |
113 |
Issue |
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Pages |
77-84 |
| Keywords |
Supervised Learning; Linear Discriminant Analysis; Numerical Stability; Computer Vision |
| Abstract |
Fisher Linear Discriminant Analysis (FLDA) is one of the most popular techniques used in classification applying dimensional reduction. The numerical scheme involves the inversion of the within-class scatter matrix, which makes FLDA potentially ill-conditioned when it becomes singular. In this paper we present a novel explicit formulation of FLDA in terms of the eccentricity ratio and eigenvector orientations of the within-class scatter matrix. An analysis of this function will characterize those situations where FLDA response is not reliable because of numerical instability. This can solve common situations of poor classification performance in computer vision. |
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IOS Press |
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Editor |
J. Vitrià, P. Radeva and I. Aguiló |
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ISBN |
978-1-58603-466-5 |
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| Notes |
MV;IAM;MILAB;SIAI |
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no |
| Call Number |
IAM @ iam @ VGR2004 |
Serial |
1663 |
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| Author |
Javier Varona; Jordi Gonzalez; Xavier Roca; Juan J. Villanueva |
| Title |
Appearance Tracking for Video Surveillance |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
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ISE |
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no |
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ISE @ ise @ VGR2003a |
Serial |
358 |
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| Author |
Jordi Gonzalez; Javier Varona; Xavier Roca; Juan J. Villanueva |
| Title |
Automatic Keyframing of Human Actions for Computer Animation |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
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ISE |
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no |
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ISE @ ise @ GVR2003a |
Serial |
359 |
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| Author |
Jordi Gonzalez; Javier Varona; Xavier Roca; Juan J. Villanueva |
| Title |
A Human Action Comparison Framework for Motion Understanding |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
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Palma de Mallorca, Spain |
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ISE |
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no |
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ISE @ ise @ GVR2003e |
Serial |
361 |
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| Author |
Jaume Amores; Petia Radeva |
| Title |
Non-rigid Registration of Vessel Structures in IVUS Images |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
In Pattern Recognition and Image Analysis, Lecture Notes in Computer Science. 2652:45–52 |
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Springer-Verlag |
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| Notes |
ADAS;MILAB |
Approved |
no |
| Call Number |
ADAS @ adas @ AmR2003 |
Serial |
363 |
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| Author |
Jaume Amores; Petia Radeva |
| Title |
Elastic Matching and Retrieval of IVUS Images Using Contextual Information |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
6th Catalan Conference on Artificial Intelligence (CCIA 2003), 137–148 |
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Palma de Mallorca |
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ADAS;MILAB |
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ADAS @ adas @ AmR2003a |
Serial |
364 |
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| Author |
M. Bressan; David Guillamet; Jordi Vitria |
| Title |
Using an ICA Representation of Local Color Histograms for Object Recognition |
Type |
Journal |
| Year |
2003 |
Publication |
Pattern Recognition, 36(3):691–701 (IF: 1.611) |
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| Notes |
OR;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ BGV2003 |
Serial |
365 |
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| Author |
M. Bressan; Jordi Vitria |
| Title |
Independent Feature Selection |
Type |
Journal |
| Year |
2003 |
Publication |
IEEE Transactions on Pattern Analysis and Machine Intelligence, 25(10): 1312–1317 (IF: 3.823) |
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OR;MV |
Approved |
no |
| Call Number |
BCNPCL @ bcnpcl @ BrV2003a |
Serial |
366 |
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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 |
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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 |
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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DAG;CIC |
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no |
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CAT @ cat @ BTL2003a |
Serial |
368 |
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| Author |
Agnes Borras; Francesc Tous; Josep Llados; Maria Vanrell |
| Title |
High-Level Clothes Description Based on Colour-Texture and Structural Features |
Type |
Conference Article |
| Year |
2003 |
Publication |
1rst. Iberian Conference on Pattern Recognition and Image Analysis IbPRIA 2003 |
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Palma de Mallorca |
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DAG;CIC |
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CAT @ cat @ BTL2003b |
Serial |
369 |
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| Author |
Ramon Baldrich; Maria Vanrell; Robert Benavente; Anna Salvatella |
| Title |
Color Enhancement based on perceptual sharpening |
Type |
Miscellaneous |
| Year |
2003 |
Publication |
Proceedings of the IEEE International Conference on Image Processing |
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Barcelona |
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CIC |
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no |
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CAT @ cat @ BVB2003 |
Serial |
370 |
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| 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 |
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| Abstract |
IF: 0.809 |
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MILAB |
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no |
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BCNPCL @ bcnpcl @ CaR2003 |
Serial |
371 |
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