基于DirectShow的视频实时校正系统设计

Design of Real-time High-resolution Stereo Video Rectification System Based on DirectShow

为了解决3D高清立体视频的实时极线校正问题,基于DirectShow的变换过滤器技术,设计并实现了一种针对双路高清立体视频从采集到校正的实时处理系统,其特点是在过滤器内通过GPU实现了校正的并行加速实时处理。分析了DirectShow技术应用在高带宽视频信号的实时采集到处理时的整体体系结构和过滤器间数据传输的流程,进而研究了如何利用DirectShow进行实时的极线校正和播放视频,最终给出了实现方法及实验结果。实验结果表明,设计得到的系统可以完成双路高清视频流从采集卡到GPU处理卡及处理后视频的输出处理功能,具有一定的应用价值。

To deal with the problem of real-time rectification for high-resolution stereo video, a system based on DirectShow is designed and implemented to capture, transfer, process and render the stereo video sequence. A rectification transform filter is designed and inside this filter, GPU is used to accelerate the processing speed. Overall analysis on how DirectShow works on high bandwidth video sequence capturing and processing is made. And fur- ther research on how it could applies to real-time rectification and video-rendering is made. Finally, the results and conclusion is given. The result shows this system could handle the whole procedure of stereo video capturing, processing, transferring and rendering, thus might be of some use in other researching areas.