ESTIMATING APPROXIMATE AVERAGE SHAPE AND MOTION OF DEFORMING OBJECTS WITH A MONOCULAR VIEW

TAEONE KIM, KI-SANG HONG
2005 International journal of pattern recognition and artificial intelligence  
With a monocular view, the nonrigid recovery of 3D motion and time-varying shapes of a deforming object may be impossible without any prior information, because ambiguous, multiple solutions exist for motion and shapes which produce the same projection image. In this paper, as a preceding step to the nonrigid recovery of a deforming object, we develop an approach for estimating the approximate average shape and motion of the object. This reasonably solves the ambiguity problem in nonrigid
more » ... m in nonrigid recovery. By investigating the internal structures of nonrigid objects, we introduce a novel concept, called DoN (Degree of Nonrigidity). Based on this, we propose an iterative certainty reweighted factorization method. In addition, we refine and improve the method by reformulating it in a robust manner to cope with outliers existing in the tracked features. Finally, we present some experimental results on both synthetic data and a real video sequence.
doi:10.1142/s0218001405004150 fatcat:oumgu2tk5fgotd6uqrcihqk3ga