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Ruchi
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How can i read the whole RGB image pixel by pixel with their values and to check that if pixels have specific value please guide me

Asked by Ruchi
on 27 Apr 2013
Latest activity Answered by Mohamed Muhajir on 31 Jan 2017
How can i read the whole RGB image pixel by pixel with their values and to check that if pixels have specific value please guide me

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2 Answers

Answer by Chandra Shekhar on 27 Apr 2013
Edited by Chandra Shekhar on 27 Apr 2013
 Accepted Answer

Suppose your image size is 50*50, then u separate each RGB plane.
image=imread('img.jpg');
R=image(:,:,1); or R=image(1:50,1:50,1);
G=image(:,:,2); or G=image(1:50,1:50,2);
B=image(:,:,3); or B=image(1:50,1:50,3);
by varying row and column of each plane you can check pixel values.
I hope this is answer for your question.

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Thanks for ur response Actually i need to read pixel values to match whether it is "1" or not.so could you please explain what will be the code for this...
I=imread('board.tif');
[m n k]=size(I);
for l=1:k
for i=1:m
for j=1:n
if I(i:j:l)==1
do
else
dont
end
end
end
end

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Answer by Mohamed Muhajir on 31 Jan 2017

what is a value of a pixel sir

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