Results 221 to 230 of about 41,003 (243)
Some of the next articles are maybe not open access.
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
openaire +3 more sources
Proceedings of the 2005 ACM symposium on Applied computing, 2005
This paper presents a variation of the classic algorithm of active contours in order to improve the visualization of 3D reconstruction of anatomical structures in medicine. This 3D reconstructions are made from the obtained contours. This variation of active contour enables a better behavior of them.Other authors have already used snakes (active ...
Francisco J. Guerrero +3 more
openaire +1 more source
This paper presents a variation of the classic algorithm of active contours in order to improve the visualization of 3D reconstruction of anatomical structures in medicine. This 3D reconstructions are made from the obtained contours. This variation of active contour enables a better behavior of them.Other authors have already used snakes (active ...
Francisco J. Guerrero +3 more
openaire +1 more source
2009 IEEE 12th International Conference on Computer Vision, 2009
Level sets and graph cuts are two state-of-the-art image segmentation methods in use today. The two methods are apparently different from each other not only because they originate from different theory foundations but also because they employ image information in different ways — level sets typically use image information in a point-wise way, whereas ...
null Shan Tan, Ioannis A Kakadiaris
openaire +1 more source
Level sets and graph cuts are two state-of-the-art image segmentation methods in use today. The two methods are apparently different from each other not only because they originate from different theory foundations but also because they employ image information in different ways — level sets typically use image information in a point-wise way, whereas ...
null Shan Tan, Ioannis A Kakadiaris
openaire +1 more source
Active Contours for Tracking Distributions
IEEE Transactions on Image Processing, 2004A new approach to tracking using active contours is presented. The class of objects to be tracked is assumed to be characterized by a probability distribution over some variable, such as intensity, color, or texture. The goal of the algorithm is to find the region within the current image, such that the sample distribution of the interior of the region
Daniel, Freedman, Tao, Zhang
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
Face contour detection using geometric active contours
Proceedings of the 4th World Congress on Intelligent Control and Automation (Cat. No.02EX527), 2003In this paper, a new method that incorporates prior shape information into geometric active contours for face contour detection is proposed. The improved geometric active contour model is implemented using a variational level set approach. With this model, face contours in images with complex backgrounds can be detected accurately depending on both the
null Fuzhen Huang, null Jianbo Su
openaire +1 more source
Fuzzy Energy-Based Active Contours
IEEE Transactions on Image Processing, 2009This paper presents a novel fast model for active contours to detect objects in an image, based on techniques of curve evolution. The proposed model can detect objects whose boundaries are not necessarily defined by gradient, based on the minimization of a fuzzy energy, which can be seen as a particular case of a minimal partition problem.
Stelios, Krinidis, Vassilios, Chatzis
openaire +2 more sources
1996
A novel geometric approach for three dimensional object segmentation is presented. The scheme is based on geometric deformable surfaces moving towards the object to be detected. We show that this model is equivalent to the computation of surfaces of minimal area in a Riemannian space. The new approach is stable, robust and automatically handles changes
V. Caselles +3 more
openaire +1 more source
A novel geometric approach for three dimensional object segmentation is presented. The scheme is based on geometric deformable surfaces moving towards the object to be detected. We show that this model is equivalent to the computation of surfaces of minimal area in a Riemannian space. The new approach is stable, robust and automatically handles changes
V. Caselles +3 more
openaire +1 more source
Active Contours with Free Endpoints
Journal of Mathematical Imaging and Vision, 2013zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Schaeffer, Hayden, Vese, Luminita
openaire +2 more sources
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
openaire +1 more source