How do i determine the pixel coordinates of an image using RGB values?

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Varun Subramaniam
Varun Subramaniam 2019-12-10
回答： JESUS DAVID ARIZA ROYETH 2019-12-10
For example: i'd like to get the coordinates of the pixels with R values from 230 to 250.

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JESUS DAVID ARIZA ROYETH
image=imread('peppers.png');
R=image(:,:,1);%red chanel
[x,y]=find(and(R>=230,R<=250));%here coordinates

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