[Insight-users] Convex Hull?

[Luis Ibanez]

Hi Harvey,

There is no explicit way of computing the convex hull
of an object in an image at this point in the  toolkit.

However, you could get very close by using the class

       itkVotingBinaryIterativeHoleFillingImageFilter.h

You could also get there by running a level set function
in such a way that only the concave regions of the front
will propagate forward, or by running a level set on the
negated image, in such a way that all convex parts of
the front propagate inwards.

Should you decide to implement this filter, we will strongly
encourage you to share it with the ITK community by
posting it as a technical report to the Insight Journal.

                http://www.insight-journal.org



     Regards,


            Luis


---------------------------------------------------------------------------------------------
On Fri, Apr 2, 2010 at 6:33 PM, Neal R. Harvey <harve at lanl.gov> wrote:
> Is there some way of calculating the convex hull of an image within ITK.
>
> Looking back, it seems like there was a short conversation about this in
> 2005, that included a statement along the lines of:
> "I don't quite see why would you need the convex-hull of a region..."
>
> There are applications where it is useful/necessary to calculate the convex
> hull
> of a an object. Other software and tools such as OpenCV and Matlab
> include such functionality, so there is obviously some call for it.
>
> It would be great if ITK had this functionality, too.
>
> Does it now exist?
>
> Cheers
>
> harve
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
>