A New Low-Complexity Integer Distortion Estimation Method for H.264/AVC Encoder

作     者：Moon, Jeong Mee Kim, Jae Ho 

作者机构：Pusan Natl Univ Dept Elect & Elect Engn Pusan 609735 South Korea 

出 版 物：《IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY》 (IEEE Trans Circuits Syst Video Technol)

年 卷 期：2010年第20卷第2期

页      面：207-212页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：2nd-phase Brain Korea 21 Ministry of Education, Korea 

主　　题：Distortion H.264/advanced video coding inverse discrete cosine transform inverse quantization rate-distortion optimization mode decision 

摘      要：In this paper, a new low-complexity distortion estimation method for the H.264 rate-distortion optimized mode decision is proposed. Coding processes, such as discrete cosine transform (DCT), quantization, inverse quantization, inverse DCT, and reconstruction, are needed to compute the distortion in an H.264 encoder. To reduce these computations, we estimate the distortion using coefficients calculated in the quantization process and eliminate the inverse quantization, inverse DCT, and reconstruction processes. In the proposed method, the distortion is computed by integer operations, which is more efficient for the hardware implementation. The simulation results show that the proposed method can reduce the encoding time by about 10% with negligible degradation in the coding performance.