Results 221 to 230 of about 75,070 (261)
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Coupled parametric active contours
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2005We propose an extension of parametric active contours designed to track nonoccluding objects transiently touching each other, a task where both parametric and single level set-based methods usually fail. Our technique minimizes a cost functional that depends on all contours simultaneously and includes a penalty for contour overlaps.
Zimmer, Christophe +1 more
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Active Contours with Free Endpoints
Journal of Mathematical Imaging and Vision, 2013zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hayden Schaeffer, Luminita A. Vese
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2008
In current active contour image segmentation methods, the number of regions is assumed to be known beforehand. It is related directly to a fixed number of active curves. How to allow it to vary is an important question which has been generally avoided.
Ismail Ben Ayed, Amar Mitiche
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In current active contour image segmentation methods, the number of regions is assumed to be known beforehand. It is related directly to a fixed number of active curves. How to allow it to vary is an important question which has been generally avoided.
Ismail Ben Ayed, Amar Mitiche
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From active contours to active surfaces
CVPR 2011, 2011Identifying the surfaces of three-dimensional static objects or of two-dimensional objects over time are key to a variety of applications throughout computer vision. Active surface techniques have been widely applied to such tasks, such that a deformable spline surface evolves by the influence of internal and external (typically opposing) energies ...
Akshaya Kumar Mishra +2 more
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Contour tracking via on-line discriminative active contours
2014 IEEE International Conference on Image Processing (ICIP), 2014This paper presents a novel on-line AdaBoost based discriminative active contour tracking framework (ADACT) using level sets. First we build an on-line AdaBoost based appearance model to track and extract the rough target region, which provides important discriminative clues for our active contour model.
Peng Lv 0001, Qingjie Zhao, Dongbing Gu
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Interactive binary active contours for prostate contour delineation
2012 IEEE 12th International Conference on Bioinformatics & Bioengineering (BIBE), 2012We present a new interactive segmentation framework to delineate the prostate from MR images. We first explicitly address the segmentation problem based on fast globally Finsler Active Contours (FAC) by incorporating both statistical and geometric shape prior knowledge.
Foued Derraz +3 more
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Adaptive potential active contours
Pattern Analysis and Applications, 2011In this paper potential active contours are presented as a new method of image segmentation. The concept of potential contour is a result of the relationship between active contour techniques and the methods of classifiers’ construction. The proposed method can be extended by the adaptation mechanism that allows changing the available class of the ...
Arkadiusz Tomczyk, Piotr S. Szczepaniak
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Active contours for cell tracking
Proceedings Fifth IEEE Southwest Symposium on Image Analysis and Interpretation, 2003This paper introduces an active contour or snake-based method for tracking cells within a video sequence. Specifically, we apply our cell tracking techniques to rolling leukocytes observed in vivo (in living animal) from video microscopy. The analysis of leukocyte motion reveals cues about the mechanism of inflammatory disease. To attack the problem of
Nilanjan Ray, Scott T. Acton
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2012
We introduce an algorithm for active contour segmentation in which the level set function encoding the contour is processed by median filtering using morphological amoebas. These are adaptive structure elements introduced by Lerallut et al. which can be combined with different morphological operations.
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We introduce an algorithm for active contour segmentation in which the level set function encoding the contour is processed by median filtering using morphological amoebas. These are adaptive structure elements introduced by Lerallut et al. which can be combined with different morphological operations.
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TAC: Thresholding active contours
2008 15th IEEE International Conference on Image Processing, 2008In this paper, we describe a region-based active contour technique to perform image segmentation. We propose an energy functional that realizes an explicit trade-off between the (current) image segmentation obtained from a curve and the (implied) segmentation obtained from dynamically thresholding the image.
Samuel Dambreville +3 more
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