Research on Adjacent Blocks Prediction Mode Selection Algorithm Applied in Video Coding

Haogui CHEN

Hunan City University, Yiyang Hunan 413000, CHINA

Abstract: For high computation complexity of H.264 video coding rate distortion optimization process, this thesis puts forward the adjacent block prediction mode selection algorithm. Using direction gradient to detect texture direction and edge strength of the current block and its neighborhood, screening out the prediction mode with larger direction gradient prior to the R - D cost calculation, the algorithm can reduce the complexi-ty of the rate distortion optimization. Experimental results indicate that, compared with other algorithms using block texture detection, this algorithm maintains the coding performance and decreases encoding time by 50%.

Keywords: Chrominance Components; Distortion; Coding Complexity; Node