[ITK-dev] [SimpleITK] Data Bridge for SimpleITK

[David Burns]

I just finished creating an interface between numpy/slicer and my ITK 
C++ project module using SWIG. I use pointers to avoid copying and it 
works well. Happy to share what I have.

- David

On 02/04/2016 02:36 PM, Hyun Jae Kang wrote:
> Hi all,
>
> To support data transparency between the functions of SimpleITK and 
> NumPy, SimpleITK provides functional integration with NumPy-based 
> script and a method of data-conversion between SimpleITK’s image data 
> and the N-dimensional array object of NumPy. But, there is a 
> significant performance bottleneck in the data-conversion which is 
> based on the operation of data copy. The performance bottleneck can be 
> increased with the size of handling image data and the number of 
> data-conversion.
>
> The performance bottle can be removed by allowing SimpleITK’s image 
> and the arrays of NumPy to share pointers to the same memory 
> symmetrically with copy-on-write semantics. That is, reduce data-copy 
> operations in the data conversion. This approach can be accomplished 
> by developing and/or improving existing data handling methods in ITK 
> and SimpleITK to enable copy-on-write sharing of data between 
> SimpleITK’s image data and other common data object of Python 
> libraries used for scientific computing and image processing.
>
> For more detail information, please check the following website:
> http://www.itk.org/Wiki/SimpleITK/Design_And_Proposals/SIP_002
>
> Any your valuable comments are welcome.
>
> Thanks,
>
> Hyun Jae
>
>
>
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