HI ALL,
Did any one guide me to find function for RGB to opponent color space that mentioned in the attached paper and link to paper RGB to opponent color space code : to

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Anand
Anand am 24 Feb. 2014
Bearbeitet: Anand am 24 Feb. 2014

3 Stimmen

From what I can tell, this should do it:
%load RGB image
im = im2double(imread('peppers.png'));
%extract each channel
R = im(:,:,1);
G = im(:,:,2);
B = im(:,:,3);
%convert to opponent space
O1 = (R-G)./sqrt(2);
O2 = (R+G-2*B)./sqrt(6);
O3 = (R+G+B)./sqrt(3);

6 Kommentare

hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014
Thank you very much,please could you provide me the paper or web site that you used for coding that converting,for I used it as a reference?
hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014
I used the code but I get this error
Error: File: RGB_to_oppent.m Line: 9 Column: 12 Unexpected MATLAB expression. at this line
O2 = (R+G-2B)./sqrt(6);
hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014
Then,I tried this correction
O2 = (R+G-2.*B)./sqrt(6);
is that correct?
Anand
Anand am 24 Feb. 2014
Yes, thats right.
hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014
Thank you very much,please could you provide me the paper or web site that you used for coding the RGB to opponent color space?
hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014
MR. Anand:I am waiting your answer,thank you.

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Weitere Antworten (3)

Image Analyst
Image Analyst am 24 Feb. 2014

1 Stimme

All that is not built into MATLAB, but MATLAB includes the lower level functions for you to build that capability yourself , particularly in the Image Processing Toolbox and the Computer Vision System Toolbox.
Image Analyst
Image Analyst am 24 Feb. 2014

1 Stimme

There are lots of color spaces you could use. Here are formulas for some of them: http://www.easyrgb.com/index.php?X=MATH
hamed abdulaziz
hamed abdulaziz am 24 Feb. 2014

0 Stimmen

THANKS, I FOUND THIS EQUATION IN THIS LECTURE,PLEASE COULD YOU GUIDE ME TO CODE THEM
AND THIS LECTURE

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