Array dimensions must match for binary array op.

%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              

[Cris LaPierre]

No idea what lakess is. It's not used in your code.

[Kat_33]

yeah its the same as lake in my code

Answer 1

[Cris LaPierre]

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.

[Kat_33]

I did but I'm stil getting the same issue. Think the problem is with the lake image since I deleted all my code and just tried to output it but it would still show me errors like this:

Multi-plane image inputs must be RGB images of size MxNx3.

[Cris LaPierre]

Consider attaching the image to your post then. Use the paper clip icon.

[Kat_33]

solved the problem, just had to change the dimensions of the image using

lake=lake[:,:,1];

[Cris LaPierre]

Your image seems to have an unexpected 3rd dimension. I plot both below. All values in the second "sheet" are 255, resulting in a white image (hard to see that here since the page is white). I think you can ignore the second sheet.

lake = lake(:,:,1);

Here are the images:

imshow(lake(:,:,1))

imshow(lake(:,:,2))

[Kat_33]

that makes sense, thank you very much!