can anyone help how add zero padding

why is it invalid expression

>> Fs = imread('F:\Garena Image\JIU chrome.jpg');

>> Hs = fspecial('sobel');

size(Fs)

ans =

747 500

Ff = fft2(Fs, 512, 512);

Hf = fft2(Hs, 512, 512);

G = Hf .* Ff;

F = real(ifft2(G));

Fx = F(1:250, 1:250);

imshow(uint8(Fx))

ans =

1364 2048 3

ans =

↑

Error: Invalid expression. Check for missing or extra characters.

Answer 1

[KSSV]

May be you are typing ans = in the workspace. You just need to type ans.

A = rand(10) ;
size(A)
ans   % no error 

You have to save the result into a variable and then display. Why you want to use ans?

ans =   % error

This statement is incomplete.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON

[peter clark]

tahnkyou it works, i used it to my homework