We change the behavior of actors in a video. For instance, the 
outcome of a 100-meter race in the Olympic game can be falsified. 
We track objects and segment motions using a modified mean shift 
mechanism. The resulting video layers can be played in different 
speeds and at different reference points with respect to the 
original video. In order to obtain a smooth movement of target 
objects, a motion interpolation mechanism is proposed based on 
continuous stick figures (i.e., a video of human skeleton) and 
video inpainting. The video inpainting mechanism is performed 
in a quasi-3D space via guided 3D patch matching for filling. 
Interpolated target objects and background layers are fused by 
using graph cut. It is hard to tell whether a falsified video 
is the original. We demonstrate the original and the falsified 
videos in our website at 
http://member.mine.tku.edu.tw/www/CVPR08/.  The proposed 
technique can be used to create special effects in movie 
industry.

Keywords: motion interpolation, video inpainting, image 
completion, graph cut, mean shift, video special effect