why threholded image didn't show objects
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Hi, I have a binary image (multithreholded; 3472 * 3256), and now I want to get objects larger than 50 pixels in area, but every time the output is nothing (pure white or pure black when i changed 50 to others). Does it mean it regards the whole as one object after threholding? Mine is like grain distributed image. Could anyone help me? Thank you.
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Image Analyst
2017년 8월 18일
Use either bwareafilt() or bwareaopen()
binaryImage = bwareaopen(binaryImage, 50);
or
binaryImage = bwareafilt(binaryImage, [50, inf]);
If you have a multilevel image, like 3 gray levels, then extract just one of the numbers to form a binary image:
binaryImage = grayImage == 1; % or whatever number you want.
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