Shadow synthesis for video postproduction

For video postproduction applications, it is often necessary to insert natural video objects in a video. This requires not only the definition of the position and the trajectory of the inserted objects but also the creation of the corresponding shadow areas. This letter proposes a method that allows the creation of moving shadow areas. It is based on the definition of texture and contour shadow models. The method has been validated on videos in which natural video objects have been inserted.