Analyzing and filtering contour deformation

This article presents a general scheme for contour deformation analysis. It is based on a point-to-point multiresolution matching and an original representation of deformation. After a short presentation, we describe how this model allows us to detect and measure motion of articulated objects without any a priori knowledge. Then we show how a frequency analysis of our deformation representation is directly connected to a meaningful distinction between local and global deformations. It allows us to perform deformation analysis and deformation filtering. Filtering allows one to synthesize a contour corresponding to only a selection of the components of an observed deformation