A Simple and Fast CU Division Algorithm for HEVC Intra Prediction

作者：Wang Yankang^*; Takagi Ryota; Yoshitake Genki

来源：IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, 2017, E100D(5): 1140-1143.

DOI：10.1587/transinf.2016EDL8134

• HEVC
• intra prediction
• CU division
• Quadtree-Structure

High Efficiency Video Coding is a new video coding standard after H.264/AVC. By introducing a flexible coding unit, which can be recursively divided from 64x64 to 8x8 blocks in a Quadtree-Structure, HEVC achieves significantly higher coding efficiency than the previous standards. With the flexible CU structure, HEVC can effectively adapt to highly varying contents with a smaller CU or to flat contents with a larger CU, making it suitable for applications from mobile video to super high definition television. On the other hand, CU division does incur high computational cost for HEVC. In this paper, we propose a simple and fast CU division algorithm by using only a subset of pixels to determine when CU division happens. Experiment results show that our algorithm can achieve prediction quality close to HEVC Test Model with much lower computational cost.

• 出版日期2017-5