Realization and Optimization of Video Encoder Based on TMS320C6455 DSPs

作     者：Wang Gang Department of Communication Engineering School of Electrical & Information Engineering Beihua University Jilin 132021,China Wang Shigang Department of Communication Engineering School of Communication Engineering Jilin University Changchun 130012,China 

会议名称：《2010 International Conference on Computer,Mechatronics, Control and Electronic Engineering (CMCE 2010)》

会议日期：2010年

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

关 键 词：Digital Signal Processors(DSPs) Video Encoder Optimization Embedded Systems 

摘      要：In view of serious cache missing of each macro block of MPEG-4(Moving Picture Experts Group-4) video encoder in transmission and the video sequence frame rate is low,We proposed the motion estimation algorithm optimization,Cache optimization,SAD(Sum of Absolute Difference) and pixel interpolation optimization,data removal using EDMA(Extended Direct Memory Access),and it has enhanced memory speed and realized the MPEG-4 video encoder optimization on TMS320DM6455 DSP *** performance of the video encoder is evaluated,the experimental result proved that the image and the video processing function computing speed increase 17.18～139.98 times and the coding efficiency is improved eleven times at least,and the research results can be used to real time video communication for more than 25 frames per second.