METHOD ON VERTEX-BASED SHAPE CODING AND INTERFRAME VERTEX PREDICTION

摘要

The present invention relates to a vertex-based shape coding method and a method for predicting adjacent inter-frame vertices. Selecting new vertices in case of duplicate correspondence points; Obtaining an error between the curve and the approximated straight line; And an encoding step, wherein the adjacent inter-frame vertex prediction method comprises: a vertex prediction step; Adjusting the predicted vertices; Checking whether all vertices were predicted; And selecting new vertices for the unpredicted vertices.;According to the present invention, when the shape of a two-dimensional object is encoded / decoded, the vertex selection process is fast and a straight line approximated with the curve has an efficient lossless / lossy coding performance. In addition, since lossless coding is possible using prediction between shape information of adjacent frames, conventional lossless coding performance using only information in one frame can be improved.