Approach
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We propose an approach to the segmentation of video
objects based on motion cues. Motion analysis is performed by
estimating local orientations in the spatio-temporal domain using
the three-dimensional structure tensor.
These estimates are integrated as an external force into an active
contour model, thus stopping the evolving curve when it reaches the
moving objects' boundaries. To enable simultaneous detection of
several objects we reformulate the tensor-based active contour model
using the level-set technique. In addition, a contour refinement
technique has been developed to approximate the real boundaries of the
moving objects.
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Short
Demo Video (MPEG-1: 2MB)
(encoded with Dirk Farin's SAMPEG)