From: tmoran@acm.org
Subject: Re: Fourier
Date: Fri, 17 Jul 2009 23:53:06 +0000 (UTC)
Date: 2009-07-17T23:53:06+00:00 [thread overview]
Message-ID: <h3r2t2$33j$1@aioe.org> (raw)
In-Reply-To: b2dd79cf-b75b-4186-b8aa-78d866581728@m11g2000yqh.googlegroups.com
>I look for general N, simple to use, basic to analyse data energy
>coherence.
I use a Glassman algorithm version. It's fast for highly composite
N (eg, powers of 2), but slow for prime sizes. For FFTing images, that
could be very slow indeed, so I use a companion utility to find the
operation count for each K in N .. N+20 to see if a small extension of
the data will substantially speed things up.
next prev parent reply other threads:[~2009-07-17 23:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-17 3:23 Fourier Pablo
2009-07-17 7:27 ` Fourier Dmitry A. Kazakov
2009-07-17 7:37 ` Fourier tmoran
2009-07-17 11:49 ` Fourier Chrono
2009-07-17 23:53 ` tmoran [this message]
2009-07-17 11:46 ` Fourier Chrono
-- strict thread matches above, loose matches on Subject: below --
2009-07-17 3:18 Fourier Pablo
2009-07-17 14:27 ` Fourier John B. Matthews
2009-07-17 19:29 ` Fourier lanceboyle
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox