In an image to set reference coordinate and get coordinates of color points .

Hi everyone,

I have an image in which i want MATLAB to detect black color point and set that point as reference x-y coordinates.

After that MATLAB to detect other color points(RGB) and get their x-y coordinates w.r.t. reference coordinate.

How can I do it?

Answer 1

[KSSV]

If I is your matrix of image ..use

[y,x] = find(I==val) ; 

where val is your pixel value you want.

If I is m*n*3 RGB image.

R = I(:,:,1) ; 
G = I(:,:,2) ; 
B = I(:,:,3) ; 

[Navodita Das]

Thank you for your answer. But sir i want coordinate values of color point w.r.t. reference coordinate which was created.

[KSSV]

Add the coordinates to the reference corrdinates.

[Navodita Das]

Thank you.