A method of adjusting the position of a vertex for a retained vertex in a contour polygon approximation when encoding shape information

摘要

The present invention can be applied to a predictive contour coding method for performing temporal prediction on a time axis for efficient compression coding of a contour of a binary mask. When a holding vertex is determined The present invention relates to a vertex position adjustment method for a vertex vertex in a contour polygon approximation when shape information coding is performed with a new vertex point minimizing a given error measure while moving the vertex vertically in a certain search window In the case of a holding vertex having an elimination vertex at an adjacent position, the error center vertex search method is not applied. The motion information of the retaining vertex can be encoded using the chain differential encoding method. And can be encoded using a coding scheme.