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Fast Energy Minimization using Learned State Filters

Matthieu Guillaumin, Luc Van Gool, Vittorio Ferrari
IEEE Conference on Computer Vision & Pattern Recognition (CVPR)
June 2013


Pairwise discrete energies defined over graphs are ubiquitous in computer vision. Many algorithms have been proposed to minimize such energies, often concentrating on sparse graph topologies or specialized classes of pairwise potentials. However, when the graph is fully connected and the pairwise potentials are arbitrary, the complexity of even approximate minimization algorithms such as TRW-S grows quadratically both in the number of nodes and in the number of states a node can take. Moreover, recent applications are using more and more computationally expensive pairwise potentials. These factors make it very hard to employ fully connected models. In this paper we propose a novel, generic algorithm to approximately minimize any discrete pairwise energy function. Our method exploits tractable sub-energies to filter the domain of the function. The parameters of the filter are learnt from instances of the same class of energies with good candidate solutions. Compared to existing methods, it efficiently handles fully connected graphs, with many states per node, and arbitrary pairwise potentials, which might be expensive to compute. We demonstrate experimentally on two applications that our algorithm is much more efficient than other generic minimization algorithms such as TRW-S, while returning essentially identical solutions.

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  author = {Matthieu Guillaumin and Luc Van Gool and Vittorio Ferrari},
  title = {Fast Energy Minimization using Learned State Filters},
  booktitle = {IEEE Conference on Computer Vision & Pattern Recognition (CVPR)},
  year = {2013},
  month = {June},
  keywords = {}