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2009 IEEE Conference on Computer Vision and Pattern Recognition
Minimizing sparse higher order energy functions of discrete variables
Miami, FL, USA
June 20-June 25
ISBN: 978-1-4244-3992-8
C. Rother, Microsoft Res., Cambridge, UK
P. Kohli, Microsoft Res., Cambridge, UK
Higher order energy functions have the ability to encode high level structural dependencies between pixels, which have been shown to be extremely powerful for image labeling problems. Their use, however, is severely hampered in practice by the intractable complexity of representing and minimizing such functions. We observed that higher order functions encountered in computer vision are very often ldquosparserdquo, i.e. many labelings of a higher order clique are equally unlikely and hence have the same high cost. In this paper, we address the problem of minimizing such sparse higher order energy functions. Our method works by transforming the problem into an equivalent quadratic function minimization problem. The resulting quadratic function can be minimized using popular message passing or graph cut based algorithms for MAP inference. Although this is primarily a theoretical paper, it also shows how higher order functions can be used to obtain impressive results for the binary texture restoration problem.
Index Terms:
message passing, sparse higher order energy function, high level structural dependencies, image labeling problem, computer vision, equivalent quadratic function minimization problem, graph cut based algorithm, MAP inference, binary texture restoration problem, discrete variables
Citation:
C. Rother, P. Kohli, Wei Feng, Jiaya Jia, "Minimizing sparse higher order energy functions of discrete variables," cvpr, pp.1382-1389, 2009 IEEE Conference on Computer Vision and Pattern Recognition, 2009
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