H.264中4×4整数DCT变换在DM642上的优化  

4×4 Integer DCT Transform Optimization in H.264 Based on DM642

作　　者：黄国玉[1] 邓贤君[1] 王彦[1] 

机构地区：[1]南华大学电气工程学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2012年第1期30-33,共4页Journal of University of South China：Science and Technology

摘　　要：基于TI公司DM642实现了H.264整数变换.首先对H.264中整数DCT变换编码进行理论分析,然后根据DM642的硬件特点对其进行线性汇编改写优化,有效地降低了整个模块运行的时钟周期数.实验结果表明该方法的优化取得了良好的效果.Abstract ： Based on DM642 DSP made by TI Company, integer transform in H. 264 is real- ized. Firstly the theory of the integer transforms in H. 264 is analyzed, and then according to the features of DM642 the H. 264 integer transform code is rewritten using the linear as- sembly language, which effectively reduce the clock cycles to run the module. Experimental results indicate that better performance can be achieved for this work.

关 键 词：H.264 整数DCT变化 线性汇编 DM642 

分 类 号：TN911.72[电子电信—通信与信息系统]