How to preform a convex Hull operation in C++

[Stonemotmot]

The current image type is not imaq image. But I think I know how to convert it. so asuming it was and I wanted to replace the current image with the result of the convex hull would I say.

image->imaqConvexHull(Image* image, Image* image, int connectivity8);

or

image->imaqConvexHull(image, image, connectivity 8);

do you know what connectivity 8 means?