[Insight-developers] Itkzlib stuck at version 1.1.4?

[kent williams]

I understand.  I was looking at the MATIO library ‹ for reading and writing
matlab files ‹ and it requires a later version.  The upside of MATIO is that
it can handle the full matlab mat file specification, the downside is that
it¹s Lesser GPL 2.1 which is problematic license wise.

The upside of ZLIB 1.2.3 are that there are some performance improvements,
added functionality, and security fixes.  In particular, it adds an
in-memory streaming mode that is necessary for reading Matlab 5 compressed
files.

Right now I have the task of reading/writing transforms in matlab format ‹
rigid affine first, but eventually reading/writing the same data as
itkTransfromFileReader/Writer...


On 7/18/07 4:57 PM, "Luis Ibanez" <luis.ibanez at kitware.com> wrote:

> 
> Hi Kent,
> 
> To my knowledge, there is no particular reason why we are sticking to
> zlib 1.1.4.  Being pragmatic, it takes a certain amount of effort to update
> the libraries, so we usually wait until there is a compelling reason for
> updating.
> 
> The more ITK gets used in clinical applications, the more careful we should
> be when updating components. This actually discourage us from continuously
> updating all the third party libraries, since these update bring uncertainty,
> and sometimes they raise backward compatibility issues.
> 
> 
> Have you found a situation where zlib 1.1.4 is giving you incorrect results,
> performance penalties or lacking some functionality that you could get
> from a more recent version of zlib ?
> 
> 
> 
>   Please let us know,
> 
> 
>       Thanks
> 
> 
> --------------------------------------------------
> On 7/18/07, Steve M. Robbins <steve at sumost.ca  <mailto:steve at sumost.ca> >
> wrote:
>> On Wed, Jul 18, 2007 at 05:08:12PM -0400, Sean McBride wrote:
>>> > On 7/18/07 4:01 PM, kent williams said:
>>> >
>>>> > >Is there a reason itk zlib is stuck at 1.1.4?  The current version is
>>>> 1.2.3.
>>>> > >
>>>> > >There shouldn't be any compatibility problems, since ITK can configure
to
>>>> > >use the system zlib, which is 1.2.3 on most current linux/osx systems.
>>> >
>>> > I recently wondered that as well.  VTK is also stuck at 1.1.4.  VTK also
>>> > has the option to use the system zlib (VTK_USE_SYSTEM_ZLIB) but alas if
>>> > you turn it on on Mac OS X, VTK can't build because OS X includes 1.2.x
>>> > not 1.1.x.  I assume this is because of zlib API changes.
>> 
>> My Debian system has VTK built against the system zlib, version 1.2.3.3
>> <http://1.2.3.3>
>> so VTK manifestly compiles with newer zlib; whether it runs correctly
>> or not I can't say ;-)
>> 
>> -Steve
>> 
>> -----BEGIN PGP SIGNATURE-----
>> Version: GnuPG v1.4.6 (GNU/Linux)
>> 
>> iD8DBQFGnoty0i2bPSHbMcURAsAsAJ9nvGwq4XVEIq9a8BG84HlaCamrNwCfV3Dp
>> DGEV2/z0144H6a1gBk550bk=
>> =byRW
>> -----END PGP SIGNATURE-----
>> 
>> _______________________________________________
>> Insight-developers mailing list
>> Insight-developers at itk.org
>> http://www.itk.org/mailman/listinfo/insight-developers
>> 
> 
> 


-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.itk.org/mailman/private/insight-developers/attachments/20070719/0cfc6612/attachment.htm