Abstract
Matting and compositing of images have been well-developed. However, matte a video needs to label foreground and background every single frame by users. Also the lack of knowledge of objects’ actual size and the depth information of the scene induce that a proper compositing result requires manual works for each frame. With the aid of proposed system, users can choose the object and simply matte it with only few clicks. For the following frames, our system can track the chosen object and generate trimap sequence automatically for video matting. With the separated foreground objects and corresponding depth information, we can composite the object at any position of a scene with correct scale. The result of experiment shows that, for video matting, users need only 1-3 click to select the object, and 3-5 click to remove the attached background segments. For video compositing, users can simply click desired position on a new scene, and the system can automatically resize the object to correct scale and complete video compositing.