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

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

Answer 1

[Chandra Shekhar]

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.

[Ruchi]

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...

[Chandra Shekhar]

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

Answer 2

[Mohamed Muhajir]

what is a value of a pixel sir