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- W2022797372 abstract "A new speed function to guide evolution of a level-set based active contour is proposed for segmenting an object from its background in a given image. The guidance accounts for a learned spatially variant statistical shape prior, 1st-order visual appearance descriptors of the contour interior and exterior (associated with the object and background, respectively), and a spatially invariant 2nd-order homogeneity descriptor. The shape prior is learned from a subset of co-aligned training images. The visual appearances are described with marginal gray level distributions obtained by separating their mixture over the image. The evolving contour interior is modeled by a 2nd-order translation and rotation invariant Markov-Gibbs random field of object / background labels with analytically estimated potentials. Experiments to segment the inner cavity of heart cine images confirm robustness and accuracy of the proposed approach." @default.
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- W2022797372 date "2010-09-01" @default.
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- W2022797372 title "Deformable model guided by stochastic speed with application in cine images segmentation" @default.
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