Tracking visible boundary of objects using occlusion adaptive motion snake

We propose a novel technique for tracking the visible boundary of a video object in the presence of occlusion. Starting with an initial contour that is interactively specified by the user and may be automatically refined by using intra-energy terms, the proposed technique employs piecewise contour p...

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Bibliographic Details
Published in:IEEE transactions on image processing 2000-12, Vol.9 (12), p.2051-2060
Main Authors: Yue Fu, Erdem, A.T., tekalp, A.M.
Format: Article
Language:English
Subjects:
Active contours
Applied sciences
Boundaries
Color
Computers in experimental physics
Detection algorithms
Energy resolution
Exact sciences and technology
Image coding
Image processing
Information, signal and communications theory
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Mathematical models
Motion detection
Object segmentation
Occlusion
Physics
Predictive models
Segments
Shape
Signal processing
Snakes
Studies
Telecommunications and information theory
Tracking
Video compression
Visual effects
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Summary:We propose a novel technique for tracking the visible boundary of a video object in the presence of occlusion. Starting with an initial contour that is interactively specified by the user and may be automatically refined by using intra-energy terms, the proposed technique employs piecewise contour prediction using local motion and color information on both sides of the contour segment, and contour snapping using scale-invariant intra-frame and inter-frame energy terms. The piecewise (segmented) nature of the contour prediction scheme and modeling of the motion on both sides of each contour segment enable accurate determination of whether and where the tracked boundary is occluded by another object. The proposed snake energy terms are associated with contour segments (as opposed to node points) and they are scale/resolution independent to allow multi-resolution contour tracking without the need to retune the weights of the energy terms at each resolution level. This facilitates contour prediction at coarse resolution and snapping at fine resolution with high accuracy. Experimental results are provided to illustrate the performance of the proposed occlusion detection algorithm and the novel snake energy terms that enable visible boundary tracking in the presence of occlusion.
ISSN:1057-7149
1941-0042
DOI:10.1109/83.887973