“…In addition to select N candidates, Zhao Liang, et al, [6] made full use of the correlation between neighboring pixels in the HM2.0 and added the MPM (the best prediction mode of the upper and left PU) to the candidate sets, which improved the video quality. Jiang, et al, [7] proposed a fast intra coding algorithm, detected whether the current coding unit belongs to the smooth region. According to the detection result, it can help determine how to adaptively skip the coding process of the coding unit sizes not suitable for the texture features.…”