whats wrong with this nearest neighbor zoom code
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alireza kooshafar
el 22 de Oct. de 2016
Comentada: Image Analyst
el 23 de Oct. de 2016
I think every thing is ok but the answer is not correct
I=imread('C:\Users\AliReza\Desktop\B.jpg');
for Channel = 1 : 3
I1 = I(:,:,Channel);
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
I3(:, :, Channel) = I2;
end
imshow(I3,[])
1 comentario
John D'Errico
el 22 de Oct. de 2016
What do you think is incorrect? Why do you think there is a problem? Perhaps you need to either learn to use the debugger, or you need to give more information if you seriously expect an answer.
Respuesta aceptada
Walter Roberson
el 23 de Oct. de 2016
Change
I2=zeros(M2 , N2);
to
I2 = zeros(M2 , N2, class(I));
0 comentarios
Más respuestas (1)
Image Analyst
el 22 de Oct. de 2016
Not sure what "is not correct" means. Perhaps you'd like to see the Mathworks demo on zooming an image, attached.
Or perhaps you want to use imresize() or imcrop().
2 comentarios
Image Analyst
el 23 de Oct. de 2016
Looks like you've accepted Walter's answer so I assume you're all set now. Write back if that's not the case.
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