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A Multiphase Dynamic Labeling Model for Variational Recognition-driven Image Segmentation
Authors:Daniel Cremers  Nir Sochen  Christoph Schnörr
Affiliation:(1) Department of Computer Science, University of Bonn, Germany;(2) Department of Applied Mathematics, Tel Aviv University, Israel;(3) Department of Mathematics and Computer Science, University of Mannheim, Germany
Abstract:We propose a variational framework for the integration of multiple competing shape priors into level set based segmentation schemes. By optimizing an appropriate cost functional with respect to both a level set function and a (vector-valued) labeling function, we jointly generate a segmentation (by the level set function) and a recognition-driven partition of the image domain (by the labeling function) which indicates where to enforce certain shape priors. Our framework fundamentally extends previous work on shape priors in level set segmentation by directly addressing the central question of where to apply which prior. It allows for the seamless integration of numerous shape priors such that—while segmenting both multiple known and unknown objects—the level set process may selectively use specific shape knowledge for simultaneously enhancing segmentation and recognizing shape.
Keywords:image segmentation  shape priors  variational methods  level set methods  dynamic labeling  recognition modeling
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