How to automatically crop a frame of a video in simulink

Hi everyone! I am working to crop lanes from frames of a video in simulink.I have used selector block to define my region of interest. But as the location of lanes will vary in every frame so do I have to define my region of interest in each and every frame by varying the parameters of selector block.Is there any way to define my ROI automatically.Any help???

Answer 1

[Ryan G]

You can go through a demo like this that detects lanes and use that to find your ROI if you have a similar problem.