Re: Installation Question: Debian 12, GraphicsMagick 1.3.42, JasPer 4.0

On Fri, 29 Sep 2023, Matthias Schmitt via Graphicsmagick-help wrote:

> Hello,
>
> I am trying to install GraphicsMagick 1.3.42 on Debian 12 "Bookworm" from source.
>
> Can I use JasPer 4.0 with GraphicsMagick or should I use an older version? Compilation works without problem, but once I test most of the JP2 tests fail.

Matthias, I allowed this email through even though you are not 
subscribed.  But just this once.  Please subscribe to the list before 
posting to it.

I seem to be using libjasper 4.0.0 on my system (Ubuntu 20.04 LTS). 
The oss-fuzz daily builds would be using the latest JasPer code, but 
they do not run the test suite.

>> not ok 12 - JP2 truecolor16
>> FAIL: tests/rwfile_deep.tap 12 - JP2 truecolor16
>
> BTW, the JP2 tests for gray images pass successfully.

That is very interesting.  Perhaps JasPer is "working" but the 
computed error/difference is higher than the limit?

If you use GraphicsMagick to open and look at a JP2 file that was 
written, does it visually look similar to the input image?

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
Public Key,     http://www.simplesystems.org/users/bfriesen/public-key.txt