南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (1): 3339.
冯伟,袁杰**
Feng Wei,Yuan Jie
摘要: 本文基于一款其有并行运算能力的数字信号处理器,完成了一个高清视频处理系统.该系统中,高清摄像采集芯片输出的视频图像采用Yaycr格式,数字信号处理器获取视频后,通过已申请专利
的基于绝对时刻块截断编码变换的Yaycr图像压缩算法进行压缩.此算法综合考虑了运算复杂性和压缩率,使得在现有平台和网络上实现高清视频传输成为可能.该系统中,高清摄像采集芯片可直接与数
字信号处理器的视频端口连接,无需外部解码器,这样既提高了系统的集成度,也降低了开发的时间和成本.为了提高代码的稳定性和可维护性,数字信号处理器程序采用了一种专为视频处理算法设计的程
序框架,所以不必考虑底层驱动和任务间协作的可靠性问题.该系统可用于交通自动化等领域,其有低成本、可靠性高等特点.
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