摘要
为了实现机载视频图像的高分辨率实时传输,设计了一种基于TMS320DM642 DSP的机载视频图像实时压缩与处理系统。在分析DM642芯片集成的片内外设特点基础上,设计了基于TMS320DM642 DSP的高集度的视频图像压缩处理平台,并采用基于C64X CPU的软件优化技术对DSP中MPEG-4压缩算法进行了优化,实现了对25帧/秒D1(704×576)或CIF(352×288)分辨率机载视频图像的实时压缩和恒定码率无线传输。
In order to transmit airplane＇s video image immediately and graphically,this paper designed an airplane＇s video image real-time MPEG-4 compression system which is based on the newest media processor TMS320DM642.Based on the analysis of the characteristic of the processor,the paper designed the hardware of the system.By using the optimization technique of the software which is based on C64X CPU,the system achieved the optimization of MPEG-4 arithmetic.The experiment shows that the compression system can real-timely compress 25 frames＇ D1 or CIF images per second according to the command,and transmit it with invariable rate.
出处
《国外电子测量技术》
2011年第1期61-63,共3页
Foreign Electronic Measurement Technology
