9/7/2001
CS
461, Copyright G.D. Hager
Matlab
Built-Ins
See the CS153
reference page for more matlab links.
• F =
fft2(A) -- Fourier transform: F is A’s frequencies
• A =
ifft2(F) -- inverse Fourier: A is F’s image
• F2 =
fftshift(F) -- places the coordinate system at center
• diary <file> -- start recording
to a file
• keyboard -- give control back
to user until return
• double vs. uint8 --
data casting functions
• zeros(x,y,…) -- creates an all-zero x by
y … matrix
diary off ; diary on
used for basic memory allocation