[opensource-dev] Openjpeg/KDU the cold hard metrics

Sheet Spotter sheet.spotter at gmail.com
Tue Sep 21 20:01:41 PDT 2010


I would love to see Robin's test harness. I would also love to see the
images that failed with v2.

I started diving into the v2 branch of OpenJPEG a few days ago, after
research JPEG 2000 for a week. Tackling the bugs from the failed images
might be a good way to become more familiar with the source code.

I posted a very minor patch correcting some simple build problems with the
DLL version of OpenJPEG V2.
	http://code.google.com/p/openjpeg/issues/detail?id=40

Does anyone have a sense of how actively the OpenJPEG source code is
maintained?

Thank you for publishing your results, Robin. They are encouraging me to
continue looking at OpenJPEG v2.


Sheet Spotter

-----Original Message-----
From: opensource-dev-bounces at lists.secondlife.com
[mailto:opensource-dev-bounces at lists.secondlife.com] On Behalf Of Lillian
Yiyuan
Sent: September 21, 2010 4:24 PM
Cc: opensource-dev
Subject: Re: [opensource-dev] Openjpeg/KDU the cold hard metrics

Could you publish the test harness, I would like to try this on the
mac with a mactools build of v2

On Tue, Sep 21, 2010 at 2:49 PM, Robin Cornelius
<robin.cornelius at gmail.com> wrote:
> On Tue, Sep 21, 2010 at 7:44 PM, Aidan Thornton <makosoft at gmail.com>
wrote:
>> On 9/21/10, Robin Cornelius <robin.cornelius at gmail.com> wrote:
>>> I'm still not 100% sure why the build of openjpeg supplied by imprudence
>>> is better than my builds on 2005.
>>
>> Imprudence is using the openjpeg SVN trunk version from a few months
>> ago, which is essentially a pre-release version of openjpeg 1.4 and is
>> slightly more optimised than 1.3.
>
> I built off revision 635 from trunk and tried with no SSE/SSE1 and
> SSE2 as per my results, SSE1 on 2008 gives the best effect, SSE2 is a
> disaster all around on my setup.
>
> Robin
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