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Javier Varona, Jordi Gonzalez, Xavier Roca, & Juan J. Villanueva. (2003). Appearance Tracking for Video Surveillance.
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Fernando Vilariño, & Petia Radeva. (2003). Cardiac Segmentation with Discriminant Active Contours. (211–217). IOS Press.
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.
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I. King, & Zhong Jin. (2003). Integrated Probability Function and Its Application to Content-Based Image Retrieval By Relevance Feedback. Pattern Recognition, 36(9): 2177–2186 (IF: 1.611).
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X. Jing, David Zhang, & Zhong Jin. (2003). Improvements on the uncorrelated optimal discriminant vectors. Pattern Recognition, 36(8): 1921–1923 (IF: 1.611).
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X. Jing, David Zhang, & Zhong Jin. (2003). Improved algorithm and generalized theory. Pattern Recognition, 36(11): 2593–2602 (IF: 1.611).
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Yong Xu, Jing-Yu Yang, & Zhong Jin. (2003). Theory analysis on FSLDA and ULDA. Pattern Recognition, 36(12): 3031–3033 (IF: 1.611).
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Zhong Jin, Franck Davoine, & Zhen Lou. (2003). Facial expression analysis by using KPCA.
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Oriol Pujol, & Petia Radeva. (2003). Texture Segmentation by Statistic Deformable Models. International Journal of Image and Graphics (IJIG).
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Oriol Ramos Terrades. (2003). Descripcio i classificacio de simbols tecnics usant la transformada de crestetes.
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David Alcalde. (2003). Image classification in terms of rotation-invariant pattern matching.
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David Masip. (2003). Dimensionality reduction techniques applied to nearest neighbor classification.
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Misael Rosales, & Petia Radeva. (2003). Empirical simulation model of intravascular ultrasound.
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J.L. Pech-Pacheco, J. Alvarez-Borrego, Gabriel Cristobal, & Matthias S. Keil. (2003). Automatic object identification irrespective to geometric changes. Optical Engineering, 42(2): 551–559 (IF: 0.877).
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Jaume Garcia, David Rotger, Francesc Carreras, R.Leta, & Petia Radeva. (2003). Contrast echography segmentation and tracking by trained deformable models. In Proc. Computers in Cardiology (Vol. 30, pp. 173–176). Centre de Visió per Computador – Dept. Informàtica, UAB Edifici O – Campus UAB, 08193 Bellater.
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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Debora Gil, & Petia Radeva. (2003). Curvature based Distance Maps. Computer Vision Center.
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