How can i get RGB value if i have position(x,y)

2012 1 21
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Image Analyst
Image Analyst 2012-1-22

2 个投票

Note that row = y and is the first index, not the second index.
redValue = rgbImage(y, x, 1);
greenValue = rgbImage(y, x, 2);
blueValue = rgbImage(y, x, 3);

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Andrew Fowler
Andrew Fowler 2012-1-21

0 个投票

Since RGB images are really 3D matrices, you can use the squeeze command :
pixelRGB = squeeze(yourImage(x,y,:));
Sukuchha
Sukuchha 2012-1-22

0 个投票

use function impixel if you have image processing toolbox
P = impixel(RGB,c,r)

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