Abstract
In this paper, we propose a fast CU depth decision algorithm for high efficiency video coding (HEVC) technology to reduce its computational complexity. In 2Nx2N prediction unit (PU), the proposed method compares to rate-distortion (RD) cost and determines the depth using the compared information. Moreover, in order to speed-up the encoding time, the efficient merge SKIP detection method is developed additionally based on the contextual mode information of neighboring CUs. Experimental result shows that the proposed algorithm achieves the average time-saving factor of 43.67% in the random access (RA) at Main profile configuration with the HEVC test model (HM) 10.0 reference software. Compared to HM 10.0 encoder, a small BD-bitrate loss of 0.55% is also observed without significant loss of image quality.
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