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A new preprint is available in IPOL: <a
class="moz-txt-link-freetext"
href="http://www.ipol.im/pub/pre/82/">http://www.ipol.im/pub/pre/97/</a><br>
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Kolmogorov and Zabih’s Graph Cuts Stereo Matching Algorithm<br>
by
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Vladimir Kolmogorov, Pascal Monasse, Pauline Tan<br>
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Abstract<br>
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Binocular stereovision estimates the three-dimensional shape of a
scene from two photographs taken from different points of view. In
rectified epipolar geometry, this is equivalent to a matching
problem. This article describes Kolmogorov and Zabih’s method, which
puts forward an energy-based formulation. The aim is to minimize a
four-term-energy. This energy is not convex and cannot be minimized
except among a class of perturbations called expansion moves, in
which case an exact minimization can be done with graph cuts
techniques. One noteworthy feature of this method is that it handles
occlusion: The algorithm detects points that cannot be matched with
any point in the other image. In this method displacements are pixel
accurate (no subpixel refinement).<br>
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