Path: news.mathworks.com!not-for-mail
From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: Re: conv2 in R2008b very slow
Date: Fri, 26 Dec 2008 20:06:02 +0000 (UTC)
Organization: Xoran Technologies
Lines: 7
Message-ID: <gj3dfa$o4q$1@fred.mathworks.com>
References: <gie3tb$qen$1@fred.mathworks.com> <3762e938-71a0-46a1-9cd4-3a56fd62fe0f@17g2000vbf.googlegroups.com> <f4977e4c-f1a7-4ef2-b024-0a0f46eac45a@v4g2000vbb.googlegroups.com> <gj3b82$ci1$1@fred.mathworks.com> <gj3d26$stu$1@fred.mathworks.com>
Reply-To: <HIDDEN>
NNTP-Posting-Host: webapp-02-blr.mathworks.com
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Trace: fred.mathworks.com 1230321962 24730 172.30.248.37 (26 Dec 2008 20:06:02 GMT)
X-Complaints-To: news@mathworks.com
NNTP-Posting-Date: Fri, 26 Dec 2008 20:06:02 +0000 (UTC)
X-Newsreader: MATLAB Central Newsreader 1440443
Xref: news.mathworks.com comp.soft-sys.matlab:508842


"Andreas Sprenger" <sprenger_a@yahoo.de> wrote in message <gj3d26$stu$1@fred.mathworks.com>...
> 
> > Andreas told me in an earlier post that size(F)=[180 180] not [23,180].
> > 
> size(F) = [180 180], correct. It is a gaussian kernel with a standard deviation of [23 23]. 

Well, whatever the issue is, it's hardware dependent. I haven't seen the convolution crunched in less than 15 sec., on any version of MATLAB.