MATLAB Answers

how to write zoom code with scale for an rgb image

6 views (last 30 days)
i write this one for gray image but i looking for rgb's too (nearest neighbor)
I1=[50 80 100 ; 115 21 90 ;32 50 160];
S=2 ;
[M , N]=size(I1);
M2=S*M;
N2=S*N;
I2=zeros(M2 , N2);
for i =1:M2
for j = 1:N2
x =i/S;
y=j/S;
x2=round(x);
y2=round(y);
if (x2<1)||(x2>M)||(y2<1)||(y2>N)
I2(i , j)=0;
else
I2(i,j)=I1(x2 ,y2);
end
end
end

  0 Comments

Sign in to comment.

Accepted Answer

Walter Roberson
Walter Roberson on 22 Oct 2016
for Channel = 1 : 3
I1 = YourImage(:,:,Channel)
now do the zooming here, just like above except without the assignment to I1
I3(:, :, Channel) = I2;
end

  2 Comments

alireza kooshafar
alireza kooshafar on 22 Oct 2016
tnx i get the way but not this part''except without the assignment to I1''
Walter Roberson
Walter Roberson on 22 Oct 2016
Your very first line was
I1=[50 80 100 ; 115 21 90 ;32 50 160];
Omit that line completely. Instead, before the loop, initialize YourImage to be an appropriate RGB image.

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by