[Insight-users] morphology operations on labeled image

[Richard Beare]

Hi,
I'm not quite sure how you mean to use a combination of label and grayscale
images. Perhaps you mean to apply a grayscale operation to a region defined
by a label? If this is the case then you need a combination of masking and
setting the masked out areas to either max or min of the grayscale value to
have the erosion/dilation ignore them. If the label regions don't touch
then you can apply the morphological operation to each one in one go. If
they do touch, and you want independent operations, then you'll probably
need to pull them out one at a time.


On Thu, Feb 13, 2014 at 8:00 PM, Kanishka <kanishkasharma10 at gmail.com>wrote:

> thanks Bradley for sharing the python solution using simple ITK. As I see,
> you have binary image in your case, I am working with grayscale image and i
> see in the description of the ITK filters, we can indeed use the morphology
> operations on grayscale images too but to do the same for selective label
> in
> the grayscale image is difficult for me to achieve right now.
>
> @Richard: I am indeed looking for a solution to selectively operate on the
> labels. I looked into the Insight journal you shared (thanks again for
> sharing), maybe I can try to work around it.
>
> Maybe also, creating a label map and then extracting the particular label,
> applying morphology operation on it and then merging it back with other
> labels is what I should try next.
>
> Kanishka
>
>
>
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