Dynamic Shape and Appearance Modeling via Moving and Deforming Layers |
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Authors: | Jeremy D. Jackson Anthony J. Yezzi Stefano Soatto |
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Affiliation: | (1) School of Electrical Engineering, Georgia Institute of Technology, 777 Atlantic Drive NW, Atlanta, GA 30332-0250, USA;(2) Department of Computer Science, University of California at Los Angeles, 405 Hilgard Ave., Los Angeles, CA 90095-1596, USA |
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Abstract: | We propose a model of the shape, motion and appearance of a scene, seen through a sequence of images, that captures occlusions, scene deformations, unconstrained viewpoint variations and changes in its radiance. This model is based on a collection of overlapping layers that can move and deform, each supporting an intensity function that can change over time. We discuss the generality and limitations of this model in relation to existing ones such as traditional optical flow or motion segmentation, layers, deformable templates and deformotion. We then illustrate how this model can be used for inference of shape, motion, deformation and appearance of the scene from a collection of images. The layering structure allows for automatic inpainting of partially occluded regions. We illustrate the model on synthetic and real sequences where existing schemes fail, and show how suitable choices of constants in the model yield existing schemes, from optical flow to motion segmentation and inpainting. |
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Keywords: | Shape modeling Appearance modeling Non-rigid registration Rigid registration Active contours |
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