how to find the area of black region in image....?
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I have to find the blank area in the image...ie its value is 0..how to find the area..help me out...
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Andrei Bobrov
2012 年 5 月 15 日
s = regionprops(YourImage == 0,'Area','PixelIdxList')
add
I = imread('44298455.png');
i0 = im2bw(I,graythresh(I));
s = regionprops(i0 == 0,'Area','PixelIdxList')
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Walter Roberson
2012 年 5 月 15 日
Is it the portion outside of the oval whose area you are trying to find?
Walter Roberson
2012 年 5 月 15 日
sum(YourImage(:) == 0)
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Walter Roberson
2012 年 5 月 15 日
Are there parts of the image which contain blank areas that you do _not_ wish to have included? The code I gave does not give the area of the whole image, only of the blank area.
Image Analyst
2012 年 5 月 15 日
Try this:
binaryImage = grayScaleImage == 0;
measurements = regionprops(binaryImage, 'Area');
allAreas = [measurements.Area]
allAreas will be an array of areas. Each physically separated, isolated, black region will have its own area in the array.
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