Fast DCT Angle-based Algorithms for H.265/HEVC Intra Prediction and Quad Tree Splitting

• Main Authors: Ming-HuaTang, 湯明樺
• Other Authors: Jar-Ferr Yang
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/50320484257911228247

碩士 === 國立成功大學 === 電腦與通信工程研究所 === 100 === Intra prediction in current High Efficiency Video Coding (HEVC) takes more coding time than H.264/AVC, the main reason for this phenomenon is the greatly increasing of intra prediction directions (up to 34). Otherwise, in HEVC, a frame is divided into many largest coding units (LCU), and each LCU can be divided into several coding unit (CU) with different kinds of size to form the quad tree structure. Moreover, the processes in order to determine the CU partition and prediction modes for intra prediction take too much time. In this paper, a fast algorithm is proposed which can accelerate both intra prediction and coding units splitting. From the experimental result, the proposed method can speeded up the total encoding time with slightly bits increasing.