Convex Hull Produces Black Image

[ben_benavides]

OK so our team is having some trouble with image tracking. This is our algorithm so far.

Capture Image->Color Plane Extraction->Threshold->Convex Hull.

We are able to to capture the image in code, apply the color plane extraction, and the threshold. We are having trouble with the convex hull. Every time we try to apply a convex hull It gives us a black image. We are retrieving the images by FTP'ing into the cRIO. Any help would be appreciated.