利用camara抓取連續的影像，利用後一張frame與前一張frame做相減後，取得動態物件之前景，



自利用侵蝕與膨脹的平滑處理去掉雜訊，最後再使用OPENCV裡的CAMSHIFT的函式最追蹤前景，



最後達到追蹤動態物件的目的。-Use camara capture sequential images, the use of a frame after frame with the previous one to do subtraction, and achieved the prospect of dynamic objects from erosion and expansion of the use of smoothing to remove noise, and finally OPENCV use a function in the CAMSHIFT type most track prospects, and finally achieve the purpose of tracking moving objects.