Abstract: Based on the strong relationship about frames near by, the Author brought forward an particle filter algorithm importing weighted sampling about pre-frame in object tracking. The algorithm resolves the trickiness in traditional SIR algorithm which depends on statcmodcl acutely by importing proposal distribution. The algorithm can track object which movement is irregular. The thought on weighted sampling about pre-frame not only can be applied in object tracking based sequential images, but also can be extended to other fields. The method is universal and practical.

Key words: Weighted sampling, Particle filter, Object tracking,Secauential images,Irregular