during the up-sampling process of my compressed image. the dimension of output is doubled . that is if input image is of resolution 1200*200 output image is of resolution 2400*400.please help me find out the mistake

%code for upsampling w = r*2; h = c*2 ; temp=zeros(w,h); y(1:2:w,1:2:h) = Val; y(2:2:w,2:2:h) = Val; y(1:2:w,2:2:h) = Val; y(2:2:w,1:2:h) = Val;

V=y;