How to reduce perimeter of Image in Matlab?
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Harry Andrews
el 3 de Sept. de 2018
Comentada: Harry Andrews
el 3 de Sept. de 2018
Hi,
I want to erode (Reduce the perimeter) of the below image by 7 pixels such that only the image within the red circle is kept.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/195032/image.jpeg)
I thought this could be done with imerode, but this also reduces the central pixels which I do not want!
Thank You :)
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Image Analyst
el 3 de Sept. de 2018
Try this:
se = strel('disk', 7, 0);
binaryImage = grayImage > 0; % Threshold.
mask = imerode(binaryImage, se);
grayImage(~mask) = 0;
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