- Y = fft2(X,m,n) truncates X, or pads X with zeros to create an m-by-n array before doing the transform. The result is m-by-n.
Convolution in Fourier domain
2 views (last 30 days)
Show older comments
Hello! I wanna implement 2D convolution using fft2 in such way:
F=fft2(im2double(imread('cameraman.tif')));
H=fft2(fspecial('motion',15,5));
G=F.*H;
But F and H are not the same size.. How to do this correctly?
0 Comments
Accepted Answer
Star Strider
on 16 May 2015
One possibility would be to zero-pad the smaller image so it is the same size as the larger one.
From the documentation:
0 Comments
More Answers (0)
See Also
Categories
Find more on Fourier Analysis and Filtering in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!