Results 21 to 30 of about 81,242 (307)
Wasserstein active contours [PDF]
2012 19th IEEE International Conference on Image Processing, 2012 In this paper, we propose a novel and rigorous framework for region-based active contours that combines the Wasserstein distance between statistical distributions in arbitrary dimension and shape derivative tools. To speed-up the computation and be able to handle high-dimensional features and large-scale data, we introduce an approximation of the ...
Peyré, Gabriel +2 more
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IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008 In this paper, we propose an image segmentation technique based on augmenting the conformal (or geodesic) active contour framework with directional information. In the isotropic case, the Euclidean metric is locally multiplied by a scalar conformal factor based on image information such that the weighted length of curves lying on points of interest ...
John Melonakos +3 more
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Nonlocal Active Contours [PDF]
SIAM Journal on Imaging Sciences, 2012 This article introduces a novel class of active contour models for image segmentation. It makes use of nonlocal comparisons between pairs of patches within each region to be segmented. The corresponding variational segmentation problem is implemented using a level set formulation that can handle an arbitrary number of regions.
Miyoun Jung +2 more
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Journal of ICT, 2022 Iris segmentation is a process to isolate the accurate iris region from the eye image for iris recognition. Iris segmentation on non-ideal and noisy iris images is accurate with active contour. Nevertheless, it is currently unclear on how active contour
Shahrizan Jamaludin +3 more
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Harmonic Active Contours [PDF]
IEEE Transactions on Image Processing, 2014 We propose a segmentation method based on the geometric representation of images as 2-D manifolds embedded in a higher dimensional space. The segmentation is formulated as a minimization problem, where the contours are described by a level set function and the objective functional corresponds to the surface of the image manifold.
Virginia Estellers +3 more
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Lipes Tracking Using Active Contour Method [PDF]
Engineering and Technology Journal, 2011 Speech recognition based on visual information such as the lip shape and its movement is referred to as lip reading. The visual features are derived according to the frame rate of the video sequence. The proposed work adopted in this paper based upon the
Abdul Monem S. Rahma +1 more
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Modified Canny Detector-based Active Contour for Segmentation [PDF]
Journal of Engineering Research - Egypt, 2021 In the present work, an integrated modified canny detector and an active contour were proposed for automated medical image segmentation. Since the traditional canny detector (TCD) detects only the edge’s pixels, which are insufficient for labelling the ...
Radwa A.Elsawy +2 more
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Fuzzy Active Contour Model With Markov Random Field for Change Detection
IEEE Access, 2022 The traditional active contour models are sensitive to the speckle noise in the synthetic aperture radar (SAR) images. In this paper, the Markov random field (MRF) theory is incorporated into the fuzzy active contour model to detect the changes of ...
Fei Xie +5 more
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Diffeomorphic Active Contours [PDF]
SIAM Journal on Imaging Sciences, 2010 In this study we present a geometric flow approach to the segmentation of three-dimensional medical images obtained from magnetic resonance imaging (MRI) or computed tomography (CT) scan methods, by minimizing a cost function. This energy term is based on the intensity of the original image and its minimum is found following a gradient descent curve in
Felipe Arrate +2 more
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Multiscale Active Contours [PDF]
International Journal of Computer Vision, 2005 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Xavier Bresson +2 more
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