How could I mark other than Blue Pixels in this image?
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Hello,
I would like to mark other than blue pixels.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/195056/image.jpeg)
Later I will compare these pixels with the other image pixel values. Is there anyone helping on this issue?
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Walter Roberson
2018년 9월 4일
Define "blue" for your purposes. Is (93, 138, 168) blue? It is for legal purposes -- it is "Air Force Blue".
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Walter Roberson
2018년 9월 4일
편집: Walter Roberson
2018년 9월 4일
[R, C] = find(~MaskIndicatingWhichPixelsAreBlue);
image(YourRGBImage);
hold on
markersize = 8;
scatter(C(:), R(:), markersize, 'r*');
hold off
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