We have implemented video trails to further help body detection. These trails are meant to retain the background as our image moves out of the ROI as a direct result of camera stabilization. In the previous post, we have camera stabilization without the video trails, in the following two videos, we have implemented video trails. The first video has the optical flow vectors showing. The second video doesn't have the optical flow vectors. You can see at various points of the video when the frame is moving out of the ROI, the background information is retained.