How to calculate percentage of green and yellow in the image
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Xinzheng Chen
el 14 de En. de 2022
Comentada: Image Analyst
el 14 de En. de 2022
I did segmentation of green and yellow color from a picture by creating the function.
After that, I need to calculate the percentage of green and yellow. I am not sure how to do that
Greenfunction is the one I segmented green, Yellowfunction is the one I segmented yellow,
I=imread("0_0_0.png");
imshow(I);
RGB=im2uint8(I);
[BW,maskedRGBImage] = Greenfunction(RGB)
figure;
imshow(maskedRGBImage)
[BW,maskedRGBImage] = Yellowfunction(RGB)
figure;
imshow(maskedRGBImage)
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Image Analyst
el 14 de En. de 2022
Editada: Image Analyst
el 14 de En. de 2022
Try this (untested)
rgbImage = imread("peppers.png");
subplot(2, 2, 1);
imshow(rgbImage);
RGB = im2uint8(rgbImage);
[greenMask,maskedRGBImage] = Greenfunction(RGB);
subplot(2, 2, 2);
imshow(maskedRGBImage)
[yellowMask,maskedRGBImage] = Yellowfunction(RGB);
subplot(2, 2, 3);
imshow(maskedRGBImage)
% Compute percentages.
greenPercentage = 100 * nnz(greenMask) / numel(greenMask);
yellowPercentage = 100 * nnz(yellowMask) / numel(yellowMask);
2 comentarios
Image Analyst
el 14 de En. de 2022
You're welcome, and thanks for Accepting the answer. I just made an edit correction (copy/paste error) on the last line. It should be
yellowPercentage = 100 * nnz(yellowMask) / numel(yellowMask);
instead of
yellowPercentage = 100 * nnz(greenMask) / numel(yellowMask);
but I guess you figured that out.
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