FFT Kernel
9 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
How to find the Kernel that is used in Matlab for doing FFT. For eg. a = [2 2; 0 1] and when I call b = fft2(a), I get the result as [5 -1;3 1].
How to find the kernel matrix that is used for FFT calculation.
0 Kommentare
Antworten (2)
Wayne King
am 29 Mär. 2012
Hi The 2D DFT computes the DFT (as defined by the equation in the fft documentation) on the columns of a, and then it computes the DFT on the rows of that output. So
a = [2 2; 0 1];
b = fft2(a);
is equivalent to
b1 = fft(a); % compute DFT of the columns of a
b2 = fft(b1.'); % compute DFT of rows of b1
0 Kommentare
Siehe auch
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!