how to crop bigger size of blob in binary image and count its pixel .

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Rahul punk
Rahul punk 2019-1-12
评论： Rahul punk 2019-1-14

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Image Analyst
Image Analyst 2019-1-12
Not sure what you mean. You can use imcrop() if you want. You can also find the bounding boxes if you want:
props = regionprops(binaryImage, 'BoundingBox');
To crop out each one individually, do this
for k = 1 : length(props)
thisBB = props(k).BoundingBox;
subImage = imcrop(binaryImage, thisBB);
figure;
imshow(subImage);
end
This is done in my Image Processing Tutorial
screenshot.jpg
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Image Analyst
Image Analyst 2019-1-13
Use bwareafilt()
biggestBlob = bwareafilt(binaryImage, 1); % Extract largest blob ONLY
areaOfBiggestBlob = nnz(biggestBlob) % Get its area

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