Contour encoding using error bands for object-orientated video coding

摘要

A segment-based contour encoding method is provided. A motion compensation of an object in a current image with respect to a reference image is performed to obtain a motion-compensated image. The contour contained in the motion-compensated image is compared with a contour of an object in a current image, to divide the whole contour of the object in the current image into a global motion compensated (GMC) segments and a global motion compensation failure (GMF) segments. Each GMF segment is divided into a local motion compensation (LMC) segment and a local motion compensation failure (LMF) segment. The GMC segments and the LMC segments are motion-compensation-encoding and the LMF segments are encoded using only pixel information constituting each LMF segment. The contour encoding method can reduce the number of the LMF segments and can perform an efficient encoding operation for motion compensation encoding. Transmission of the contour-encoding using motion compensation of an object in a current image is accompanied by position information of the contour-encoded current object.