MATLAB: Array dimensions must match for binary array op.

arrayMATLAB

%b
lake=imread('lake.tif');
lake_fft=fftshift(fft2(lake));
[M,N]=size(lake_fft);
lap_filt=zeros(M,N);
for i=1:M
    for j=1:N
        lap_filt(i,j)= -4*pi^2*((i-M/2)^2+(j-N/2)^2);
    end
end
lake_fft=lake_fft.*lap_filt;
lake_reconstruct=ifft2(ifftshift(lake_fft));
figure(1)
subplot(1,2,1);imshow(lake);title('Original Image')
subplot(1,2,2);imshow(lake_reconstruct,[]);title('Laplace frequency')
Im getting the following errors:
Array dimensions must match for binary array op.
(line 12)
lake_fft=lake_fft.*lap_filt;
not sure what the problem is and how it can be solved
whos lakess
  Name          Size                Bytes  Class    Attributes
  lakess      512x512x2            524288  uint8

Best Answer

The code runs just find for me. I don't have 'lake.tif', but I don't think that should matter.
Try clearing your workspace or restarting MATLAB.
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