[Insight-users] Why are getBufferAs* methods not available in Java?

[Bradley Lowekamp]

Zamir,

I am glad to hear that this is not a show stopper. This is certainly a bug that it is missing and it'll be a high priority to get it fixed.

ITK is scheduled for a 4.4 release at the end of the month. While there has not been much additional new features added to SimpleITK since 0.6, there are numerous performance enhancements in ITK, that would benefit SimpleITK. So I am considering updating SimpleITK to use ITK 4.4 and making a SimpleITK 0.6.2 patch release. This would certainly include there.

Thanks for reporting the issue. It would be great it you get a moment to fix the bug too. Here is some info on how to do that:

http://www.itk.org/SimpleITKDoxygen/html/Developer.html

I also created a JIRA ticked for this issue:

https://issues.itk.org/jira/browse/SIMPLEITK-398



-Brad

On May 6, 2013, at 9:01 AM, Zamir Khan <zamir.khan at gmail.com> wrote:

> Hi Dan,
> 
> Thank you for investigating and confirming the issue. I would like to look into this more at some point, but that will have to wait until some time opens up. It'd also be my first experience with SWIG, but I consider that a learning opportunity. For now that these functions are missing represents an inconvenience for me rather than a showstopper. 
> 
> Thanks,
> Zamir
> 
> 
> On Fri, May 3, 2013 at 5:54 PM, Dan Mueller <dan.muel at gmail.com> wrote:
> Hi Zamir,
> 
> I downloaded the latest SimpleITK C# binaries (
> SimpleITK-0.6.1.post2-CSharp-win32-x86.zip) and can confirm that the
> getBufferAs* methods are missing.
> 
> This has revealed a hole in the automated testing.
> 
> A number of things need to happen:
> 1. A (C#) test needs to be added which uses these functions (probably
> to Testing/Unit/CSharpImageTest.cs).
> 2. The cause of the missing functions needs to be identified and fixed.
> 
> I've had a quick look at the code and can't work this out — everything
> seems in order. There is a C++ test which exercises the methods (so
> they exist in C++ world), and SimpleITK.i contains the lines:
> 
> #ifndef CSHARP
> %ignore itk::simple::Image::GetBufferAsInt8;
> %ignore itk::simple::Image::GetBufferAsUInt8;
> %ignore itk::simple::Image::GetBufferAsInt16;
> %ignore itk::simple::Image::GetBufferAsUInt16;
> %ignore itk::simple::Image::GetBufferAsInt32;
> %ignore itk::simple::Image::GetBufferAsUInt32;
> %ignore itk::simple::Image::GetBufferAsInt64;
> %ignore itk::simple::Image::GetBufferAsUInt64;
> %ignore itk::simple::Image::GetBufferAsFloat;
> %ignore itk::simple::Image::GetBufferAsDouble;
> #endif
> 
> So I don't understand...
> 
> Unfortunately I am flat out at the moment and won't have a chance to
> look further for a while. If you want to investigate yourself, we
> welcome any contribution!
> 
> Thanks for reporting the issue and sorry for the delay in responding.
> 
> Regards, Dan
> 
> 
> On 3 May 2013 01:05, "Zamir Khan" <zamir.khan at gmail.com> wrote:
> >
> > I am primarily working with VS2010, .NET 4.0, x64, if that helps.
> >
> > Thanks,
> > Zamir
> >
> >
> > On Thu, May 2, 2013 at 11:34 AM, Zamir Khan <zamir.khan at gmail.com> wrote:
> >>
> >> Can anyone confirm whether they have access to the GetBufferAs* methods in the C# wrappers of SimpleITK in v0.6.1 or later?
> >>
> >> Thanks,
> >> Zamir
> >>
> >>
> >> On Tue, Apr 30, 2013 at 11:26 AM, Zamir Khan <zamir.khan at gmail.com> wrote:
> >>>
> >>> Sorry, I'm not sure what is meant by "compile distribution". If you mean the 0.6.1 release binaries, that is what I started with (and what led me to build from the source). In both versions, I do not see any buffer related methods for the Image object in the C# wrappers (using the object explorer and Intellisense).
> >>>
> >>> On an unrelated note, I also found a strange discrepancy that I could use Image.GetPixelID() in the x64 version, but not the x86 version.
> >>>
> >>> Thanks,
> >>> Zamir
> >>>
> >>>
> >>> On Tue, Apr 30, 2013 at 11:14 AM, Bradley Lowekamp <blowekamp at mail.nih.gov> wrote:
> >>>>
> >>>> Hello Zkhan,
> >>>>
> >>>> Those methods should still be there.  Are you able to find them in the compile distribution?
> >>>>
> >>>> I checked to see if there was a test for those methods in C# and I didn't see them any place. So I can't confirm that they are being tested nightly.
> >>>>
> >>>> Brad
> >>>>
> >>>> On Apr 30, 2013, at 8:44 AM, zkhan <zamir.khan at gmail.com> wrote:
> >>>>
> >>>> > Sorry to revive an old-ish thread, but I read here that the GetBufferAs*
> >>>> > methods are implemented for C#. However, I just pulled and built SimpleITK
> >>>> > 0.7.32799.0 and I cannot find any methods to retrieve a buffer from the
> >>>> > image. As has been mentioned, this would provide a significant performance
> >>>> > improvement over having to access the image pixel-by-pixel when needing to
> >>>> > transfer the image data outside of the Image object.
> >>>> >
> >>>> > Have these methods been removed, or not yet implemented?
> >>>> >
> >>>> >
> >>>> >
> >>>> > --
> >>>> > View this message in context: http://itk-users.7.n7.nabble.com/Why-are-getBufferAs-methods-not-available-in-Java-tp30969p31309.html
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> >>>
> >>
> >
> 

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