code for optical flow estimation using OpenCV from realtime video from a webcam

基于MFC类库，可以播放AVI文件，以及从USB摄像头实时采集图像-use MFC class lib to play avi file and to capture the camera picture and display the picture realtime.

通过对directshow进行包装，捕获摄像头获取的实时图像；程序通过C#调用directshow的COM接口；-through packed DirectShow,capture the realtime video stream the program uses C# to invoke DirectShow s COM interface.