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How do I find the area of a binary image?

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Heejin Kim
Heejin Kim il 2 Lug 2015
Risposto: Image Analyst il 2 Lug 2015
Hi, I need to find the area of this image (around the outer edge). Anyone got an idea? Thanks!!!!!

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Image Analyst
Image Analyst il 2 Lug 2015
To find the actual boundary, invert, fill, and sum
binaryImage = imfill(~binaryImage, 'holes');
numPixels = sum(binaryImage(:));
If you want a smooth boundary, you need to use activecontour(), like in my attached demo.

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