Correct image distortion


This must have been asked already, but I did not find anything about it. How can I correct a image distortion ?

I’m using ‘videoin’ to grab the video feed from a video camera, and would like to correct the distortion of the incoming image - kind of keystone (Enlarge the top of the image). I looked at ‘Category EX9.Geometry’ and ‘Category Transform’ (in the Reference) but I didn’t manage to get something to do the job.


I just found that thread