Register to reply

Fourier space coordinates (p, q)

by barnhillec
Tags: coordinates, fourier, space
Share this thread:
barnhillec
#1
May1-12, 04:52 AM
P: 2
Greetings,

I am attempting to implement an algorithm in which I am multiplying an f(x,y) times a (p^2 + q^2) in which (x,y) and (p, q) are real-space and "Fourier-space pixel coordinates", respectively, of the same 2D image.

I have the image and its Fast Hartley Transform but can't really get beyond that. f(x,y) gives me the grayscale value of the point of course. p and q will identify a point in the FHT image but if I just use p and q as values, I'm getting an integer mask that has nothing to do with the image.

I don't think of Fourier space pixels as mapping 1 to 1 onto real space pixels so it doesn't seem to me that I'm looking for a corresponding Fourier space pixel for the real space pixel. That wouldn't work in k space anyway.

Any tips on this puzzle would be greatly appreciated.

Thanks, ECB
Phys.Org News Partner Engineering news on Phys.org
Greater safety and security at Europe's train stations
Fingerprints for freight items
On the way to a safe and secure smart home

Register to reply

Related Discussions
Coordinates of phase space Classical Physics 0
Hom. heat equation in cylindrical coordinates using Fourier & Laplace transforms Differential Equations 1
Fourier transform in central and difference coordinates Calculus 0
Simultaneous detection of the space coordinates of the ends of a moving rod? Special & General Relativity 0