Optimization of wireframe model adaptation and motion estimation in a rate-distortion framework

A rate-distortion framework is used to define a very low bit rate coding scheme based on wireframe model adaptation and optimized selection of motion estimators. This technique achieves maximum reconstructed image quality under the constraint of a target bitrate for the coding of the motion vector field, the wireframe representation information and the prediction error. Experimental results illustrating the performance of the proposed techniques in very low bit rate image sequence coding application areas are presented and evaluated.