THE STUDY OF INTERPOLATIVE PREDICTION HYBRID CODING METHOD IN B PICTURE

- NON-ORTHOGONAL CODING USING THE SPACE-TIME CORRELATION -

Abstract

In this paper, we proposed a new hybrid B-frame coding method which combined motion-compensated (MC) and non-causal prediction. The motion-compensated prediction is making full use of time correlation, while non-causal prediction is using the space correlation and has the characteristic of non-orthogonal transform coding. The new method is possible to reduce more MC prediction error signal power. Furthermore, in order to realize spatial replenishment control according to non-significant/significant pixel position of the input signal, a new conditional replenishment pixel control processing has been developed. This technology contains two parts: replenishment pixel decision in two kinds of resolution and differential feedback quantization to suppress the error in non-replenishment pixel region. According to these methods, fine grained rate control with maintaining the high coding performance achieved. Simulation results show that new coding method achieves about 1.0~2dB improvement in average when the entropy is almost the same to H.264 coding scheme.