Hi all how can i get convex hall from a binary image? for example 0 0 1 1 1 0 ==> 0 0 1 1 1 0 0 0 0 1 0 0 0 1 1 1 1 0 0 0 0 1 0 0 0 1 1 1 1 0 0 1 1 1 1 0 0 1 1 1 1 0 I have tried the filter itkHConvexImageFilter but it doesn't work. regards, kingaza