高清电子内窥镜系统低时延视频处理设计

摘要

针对高清电子内窥镜视频处理系统的高实时性要求，提出一种基于TILE-Gx36多核处理器的高清电子内窥镜系统低时延视频处理设计方案。将内窥镜的视频处理任务按流水线的处理方式划分为视频采集、视频处理和视频送显，并利用多核处理器的并行处理能力，从视频采集、视频处理2个环节入手，采用减少视频采集等待时间的方法来减少采集延时，通过优化插值算法和实现多任务负载均衡的并行处理来提高视频处理环节的效率。实验结果表明，该方案的实时视频处理延时在19.4 ms以内，达到了医用电子内窥镜领域的较高水平。%Considering the demand of more higher real-time medical electronic endoscope,this paper proposes a design for real-time High Definition( HD) video processing system based on TILE-Gx36 multicore processor. According to the pipeline processing design pattern, the design divides the video processing task into three parts, which are video acquisition,processing and showing. By making full use of the parallel processing ability of multicore processor, the system reduces the delay time of video acquisition and processing. By reducing the time wasted on video acquisition, optimizing the interpolation algorithm and achieving parallel processing of video processing with load balancing, the efficiency of processing is improved,and the delay of the system is reduced. Experimental results show that the delay of the system is less than 19. 4 ms,which reaches the leading level in the field of endoscope.