Re: fast 2-D convolution in polar coordinates?
- From: "Don't Be Evil" <g626700-gg@xxxxxxxxx>
- Date: 17 Jul 2006 16:51:10 -0700
Brian Tung wrote:
Does anyone have fast code for performing 2-D convolution with functions
in polar coordinates? Basically, I have two functions that are radially
symmetric, so they don't depend on theta. Call them a(r) and b(r). I
want to compute the convolution of them, c(r) = a(r) (*) b(r). I have a
way of doing that now, but it seems like it could be speeded up, either
by using a more clever approach (I'm using a double integral) or with
really spiffy and efficient code. Anyone have any tips?
Yes, this is for my resolution of doubles problem. In case it isn't
clear, this can be (and probably has to be) done numerically.
--
Brian Tung <brian@xxxxxxx>
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.html
Why don't you post your existing code, and the rest of us can look at
possible optimisations.
.
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- From: Brian Tung
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