[Insight-users] Multitreading in ITK classes

[Cagatay Bilgin]

This is a nice page explaining how threading in ITK works
http://www.itk.org/Doxygen/html/ThreadingPage.html

Cagatay

On Wed, Oct 10, 2012 at 6:12 AM, Bradley Lowekamp <blowekamp at mail.nih.gov>wrote:

> Hello,
>
> If you want to implement a single threaded ImageFilter you over-ride the
> GenerateData() method, if you want to implement a multi-threaded filter you
> over-ride the ThreadedGenerateData() method and optionally
> the  BeforeThreadedGenerateData,() or the AfterThreadedGenerateData()
> methods. The ImageSource class over-rides the GenerateData() method to
> split the image and multi-thread the processing:
>
>
> https://github.com/Kitware/ITK/blob/master/Modules/Core/Common/include/itkImageSource.hxx#L251
>
> For multi-threaded filters this ThreadedGenerateData() methods should
> produce the output region that is passed as a parameter, which the single
> threaded GenerateData() method should produce the output image(s)'
> requested regions.
>
> The general guideline is to file an image filter which does a similar
> operation and use it as a model for implementing your own filter.
>
> Brad
>
> On Oct 10, 2012, at 6:09 AM, Dženan Zukić <dzenanz at gmail.com> wrote:
>
> Take a look at these simple examples:
> http://www.itk.org/Wiki/ITK/Examples/Developer/MultiThreadedImageFilter
> http://www.itk.org/Wiki/ITK/Examples/Developer/OilPaintingImageFilter
>
>
> On Wed, Oct 10, 2012 at 7:40 AM, Ashwath Hegde, ERS-HCLTech <
> Ashwathh at hcl.com> wrote:
>
>> Hi All,****
>>
>> ** **
>>
>> I am new to ITK.I have written some image processing algorithms like
>> binarization,contrast enchancement etc  in C.****
>>
>> I want to apply threading concept on the algorithms which I have written
>> in C so that they execute faster.****
>>
>> So I wanted to know how multithreading is applied on various filters in
>> ITK,so that I can apply the same concept on my C algorithms.****
>>
>> I debugged the example “FlipImageFilter.cxx” to see if it was
>> multithreaded but could find out much.****
>>
>> ** **
>>
>> Kindly help me in this.****
>>
>> ** **
>>
>> Regards,****
>>
>> Ashwath****
>>
>> ** **
>>
>> ** **
>>
>>
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-- 
Cemal Cagatay Bilgin
Life Sciences Division
Lawrence Berkeley National Lab
MS977, One Cyclotron Road
Berkeley, CA 94720, USA
Email: ccbilgin at lbl.gov <hchang at lbl.gov>
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