Macroblock Coding Mode Predictive Method Based on Spatio-Temporal Correlation
H.264 video coding standard can achieve gains in coding efficiency of up to 50% than previous standards. However, this comes at a cost in considerably increased complexity at the encoder mainly due to motion estimation and mode decision. In this paper, a macroblock coding mode predictive method based on spatio-temporal correlation was proposed. This method first searches the modes predicted by the spatio-temporal correlation, then decides whether to terminate the mode decision procedure according to a corresponding threshold instead of searching all modes. Experimental results show that this method can efficiently reduces the computational complexity with similar RD performance.