[Pkg-octave-devel] [OctDev] [RFU] octave-image 2.0.0-1
Doug Stewart
doug.dastew at gmail.com
Tue Nov 13 00:18:08 UTC 2012
octave-3.2.4:1> conv2(1:3, 1:2, [1 2; 3 4; 5 6])
ans =
1 4 7 6
5 18 31 24
11 36 61 42
10 32 54 36
On Mon, Nov 12, 2012 at 4:21 PM, Jordi Gutiérrez Hermoso <jordigh at octave.org
> wrote:
> On 12 November 2012 08:59, Sébastien Villemot <sebastien at debian.org>
> wrote:
> > Rafael Laboissiere <rafael at laboissiere.net> writes:
> >
> >> I prepared version 2.0.0-1 in experimental for upload. I added two
> patches in
> >> this version:
> >
> > Uploaded.
> >
> >> 1. fftconv2-usage.patch: This removes one of the bogus usage of
> fftconv2. I
> >> discussed this with the upstream author Carnë Draug in the octave-dev
> mailing
> >> list. Feel free to revert my patch if you think it is not appropriate.
> >
> > Since your patch fixes #664716, I kept it. I don't know how upstream
> > wants to solve the issue.
>
> Talking to Carnë in IRC, it seems clear that the problem isn't that
> the test is wrong but rather that fftconv2 is wrong here. It seems
> like an actual bug.
>
> OF list: fftconv2's vector-vector-matrix three-arg call seems
> incorrect and seems to have been incorrect for some time. Can anyone
> please confirm? These two calls should both be equal:
>
> octave:1> conv2(1:3, 1:2, [1 2; 3 4; 5 6])
> ans =
>
> 1 4 4
> 5 18 16
> 14 48 40
> 19 62 48
> 15 48 36
>
> octave:2> fftconv2(1:3, 1:2, [1 2; 3 4; 5 6])
> ans =
>
> 1 4 7 6
> 5 18 31 24
> 11 36 61 42
> 10 32 54 36
>
>
> The upper result is correct. You can nobtain this result with
> fftconv2(fftconv2([1 2; 3 4; 5 6,1:2),1:3), so I think this should be
> fairly easy to fix.
>
> Patches, anyone?
>
> - Jordi G. H.
>
>
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--
DAS
https://linuxcounter.net/user/206392.html
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