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Patricia Marquez, Debora Gil and Aura Hernandez-Sabate. 2011. A Confidence Measure for Assessing Optical Flow Accuracy in the Absence of Ground Truth. IEEE International Conference on Computer Vision – Workshops. Barcelona (Spain), IEEE, 2042–2049.
Abstract: Optical flow is a valuable tool for motion analysis in autonomous navigation systems. A reliable application requires determining the accuracy of the computed optical flow. This is a main challenge given the absence of ground truth in real world sequences. This paper introduces a measure of optical flow accuracy for Lucas-Kanade based flows in terms of the numerical stability of the data-term. We call this measure optical flow condition number. A statistical analysis over ground-truth data show a good statistical correlation between the condition number and optical flow error. Experiments on driving sequences illustrate its potential for autonomous navigation systems.
Keywords: IEEE International Conference on Computer Vision – Workshops
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