Full scheme of MPEG4-like codec based on wavelet transform

We propose a full scheme of video codec with enhanced features, which are very useful for multimedia applications. Our codec supports video object based compression: the encoder automatically detects and tracks moving video objects with minor human interactivity. Each object is represented in constrained Delaunay mesh structure and encoded in motion-compensation manner to reduce the needed bit-rate for transmission. By transforming the residual errors (used as correction-values after motion-estimation) into wavelet domain followed by quantising phase, we not only reduce the bandwidth to even lower limit but also guarantee the proper quality (up to the possibly maximum deployed level) for various end-users with a bitstream possessing a famous property - the scalability - regardless the speed of the user-access to the communication network. Simulation is also implemented to demonstrate these virtues.