Message Passing Least Squares Framework and its Application to Rotation Synchronization

Yunpeng Shi · Gilad Lerman


Keywords: [ Computer Vision ] [ Information Theory and Estimation ] [ Non-convex Optimization ] [ Applications - Computer Vision ]

[ Abstract ]
[ Slides
Wed 15 Jul 5 a.m. PDT — 5:45 a.m. PDT
Wed 15 Jul 4 p.m. PDT — 4:45 p.m. PDT


We propose an efficient algorithm for solving group synchronization under high levels of corruption and noise, while we focus on rotation synchronization. We first describe our recent theoretically guaranteed message passing algorithm that estimates the corruption levels of the measured group ratios. We then propose a novel reweighted least squares method to estimate the group elements, where the weights are initialized and iteratively updated using the estimated corruption levels. We demonstrate the superior performance of our algorithm over state-of-the-art methods for rotation synchronization using both synthetic and real data.

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