Method and apparatus for encoding a video signal of a contour of an object

摘要

Previous vertices on a previous contour are mapped onto a current contour in this method to form a predicted vertex on the current contour corresponding to each of the previous vertices and vertex displacements between the previous vertices and their corresponding predicted vertices are calculated. After current vertices on the current contour being determined, the current contour is coded based on either the current vertices to thereby provide intra-coded data or the previous contour to provide inter-coded data; and either the intra-coded data or the inter-coded data is selected based on the vertex displacements as encoded data for the current contour.