segmentation via chan-vese algorithm

hi I want to do my project and I need help. my project summary is: I have an "avi" video. this video represents a street that peoples and cars moves through it in random times. first I must choose a random frame of video and I must segment every moving object(peoples and cars) in that frame. I want to use chan-vese algorithm(Active Contours Without Edges) for segmentation. I find a sample code in internet about it but it doesn't work goodly. anybody can help me. thank you so much for your attentions.

[Sean de Wolski]

So the camera is fixed?

[taham]

yes

Answer 1

[Sean de Wolski]

Assuming the camera is fixed, you should be able to subtract two adjacent frames and anything that has changed between them must be moving (excluding changes in daylight/brightness/etc.).

[taham]

we don't deal with video.

we just work with images(frames)