Abstract
The Mumford-Shah functional is a general and quite popular variational model for image segmentation. In particular, it provides the possibility to represent regions by smooth approximations. In this paper, we derive a statistical interpretation of the full (piecewise smooth) Mumford-Shah functional by relating it to recent works on local region statistics. Moreover, we show that this statistical interpretation comes along with several implications. Firstly, one can derive extended versions of the Mumford-Shah functional including more general distribution models. Secondly, it leads to faster implementations. Finally, thanks to the analytical expression of the smooth approximation via Gaussian convolution, the coordinate descent can be replaced by a true gradient descent.
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We thank the anonymous reviewers for comments leading to improvements of the manuscript, and we gratefully acknowledge funding by the German Research Foundation (DFG) under the project Cr250/1.
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Brox, T., Cremers, D. On Local Region Models and a Statistical Interpretation of the Piecewise Smooth Mumford-Shah Functional. Int J Comput Vis 84, 184–193 (2009). https://doi.org/10.1007/s11263-008-0153-5
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DOI: https://doi.org/10.1007/s11263-008-0153-5