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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Respuestas (3)
Andrei Bobrov
el 15 de Mayo de 2012
s = regionprops(YourImage == 0,'Area','PixelIdxList')
add
I = imread('44298455.png');
i0 = im2bw(I,graythresh(I));
s = regionprops(i0 == 0,'Area','PixelIdxList')
4 comentarios
Walter Roberson
el 15 de Mayo de 2012
Is it the portion outside of the oval whose area you are trying to find?
Walter Roberson
el 15 de Mayo de 2012
sum(YourImage(:) == 0)
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Walter Roberson
el 15 de Mayo de 2012
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
el 15 de Mayo de 2012
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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