[Insight-developers] Data Provenance Roadmap

[Luis Ibanez]

Thanks Stephen,


It seems that the two main efforts will be:


    A) Extending the MetaDataDictionaries
       to carry provenance data across the
       ITK pipeline.


    B) Reading and Writing provenance data
       from/into adjunt files that are stored
       along with image files. These adjunt
       files will use XML as base format.


Presumable the main use of the libxml2 library will be
in new Readers and Writers classes that will deal with
XML files listed in (B) that will be companions to
standard image file ?


Is that correct ?


     Luis


--------------------------
Stephen R. Aylward wrote:
> Hi,
> 
> For a short summary on data providence, you can find information at:
> http://www.vtk.org/Wiki/ITK_Roadmap_2007_2008#Keeping_up_with_the_Field
> Specifically, Item #3
> 
> I'll try to create a wiki dedicated to this topic, but it may be a few days
> (next week) before I can get to it.
> 
> Thanks,
> Stephen
> 
> =======================================
> Stephen R. Aylward, Ph.D.
> Chief Medical Scientist
> Kitware, Inc. - Chapel Hill Office
> http://www.kitware.com
> Phone: (518)371-3971 x300
>  
> 
> 
>>-----Original Message-----
>>From: 
>>insight-developers-bounces+stephen.aylward=kitware.com at itk.org
>> 
>>[mailto:insight-developers-bounces+stephen.aylward=kitware.com
>>@itk.org] On Behalf Of Luis Ibanez
>>Sent: Tuesday, January 22, 2008 1:51 PM
>>To: Julien Jomier
>>Cc: ITK; Steve Pieper
>>Subject: Re: [Insight-developers] LIBXML2 : Data Provenance Roadmap ?
>>
>>
>>In an effort to put this discussion into context:
>>
>>
>>     Is there a roadmap on how data provenance
>>       is going to be integrated into ITK ?
>>
>>
>>
>>To be more concrete:
>>
>>
>>a) Are we talking about a new framework of classes
>>    that will be added to the toolkit ?
>>
>>b) Are we talking about modifications to the basic
>>    classes such as the itk::Image, MetaDataDictionary
>>    or the ImageIO classes ?
>>
>>c) Is libxml2 the only 3rd party library needed ?
>>    or do we need to include additional tools in
>>    order to have a functional support for data
>>    provenance ?
>>
>>
>>
>>  What ITK classes are going to use the libxml2 API ?
>>
>>
>>  Who will be the typical users of these classes ?
>>
>>
>>  Is this a functionality that will interest all ITK users ?
>>  or is it more targeted to a 20% of the users,
>>  10% of the users ? 1% ?
>>
>>
>>
>>   Answering these questions should help us evaluate
>>   how libxml2 should be integrated with ITK.
>>
>>
>>
>>       Luis
>>
>>
>>
>>---------------------
>>Julien Jomier wrote:
>>
>>>Bill, Stephen and others,
>>>
>>>Independently of Stephen's work, for what we are doing with the 
>>>integration XCede data provenance and ITK we will need 
>>
>>libxml2 at some 
>>
>>>point. We started to work on XCede with Expat with mixed 
>>
>>success and 
>>
>>>found out that libxml2 does the job very well. All our current 
>>>development is based on libxml2.
>>>
>>>I understand your concern, however libxml2 has been 
>>
>>compiling on VTK's 
>>
>>>dashboard for a long time and ITK and VTK are sharing a lot of the 
>>>compilers/OS, so I don't see that has a major issue (unless I'm 
>>>missing something).
>>>
>>>I agree that libxml2 is a big library and we should investigate if 
>>>it's worth the integration into ITK. If other developers can raise 
>>>their opinion on the subject that would be great, also we 
>>
>>might want 
>>
>>>to send an email to the users list to get some feedbacks...
>>>
>>>my two cents,
>>>
>>>Julien
>>>
>>>Bill Lorensen wrote:
>>>
>>>
>>>>Stephen,
>>>>
>>>>I just checked the LOC-load of the two libraries:
>>>>expat - ~11,000 LOC
>>>>xml2 - ~210,000 LOC
>>>>
>>>>Is the xml2 LOC-load worth it in itk and slicer?
>>>>
>>>>Bill
>>>>
>>>>
>>>>
>>
>>---------------------------------------------------------------------
>>
>>>>---
>>>>
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>>>
>>>
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>>>
>>
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