Opencv remove convexity defects from convex Hull

#opencv#c++

asked 2014-09-06 13:06:16 -0600

cmc
21 ●4

I have an image with a convexHull drawn on it (seen here: http://imgur.com/BPsiIgm). How would I change the grey convex hull line so that, rather than being straight lines to each point in the hull, they conform more to the boundary/contours of the objects within the convex hull?

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answered 2014-09-07 07:16:04 -0600

FooBar
2938 ●9 ●37 http://magazino.eu/

What you want sounds more like the contour of the object and not the convex hull. A generalization of the convex-hull is the alpha-shape ( http://doc.cgal.org/latest/Alpha_shapes_2/index.html ) Maybe this could be more what you want (do you have an image of your wanted contour?)