[Insight-users] Restrict image processing to a smaller region

[Chr. Rossmanith]

I've applied a filter to the input image (at the moment without setting 
the requested region - but if there is a guarantee that it is respected 
by the filter I'd add it again  :-)  but the images aren't very big so 
performance is not really an issue) and used an itkPasteImageFilter to 
paste the ROI of the processed image into the original image. That is 
what is written to disk.

Christina

Am 15.02.2012 18:49, schrieb Bill Lorensen:
> Christina,
>
> Which approach ended up working for you?
>
> On Wed, Feb 15, 2012 at 9:41 AM, Chr. Rossmanith
> <cr at neuro.ma.uni-heidelberg.de>  wrote:
>> Thank you, now I finally have my application working. How could I test that
>> a filter really restricts itself to the requested region? If I add the
>> medianFilter to the viewer as a forth image the whole image has been
>> processed. But that might be because the viewer requests the whole image...
>>
>> Christina
>>
>> Am 08.02.2012 18:27, schrieb Bill Lorensen:
>>
>>> I just added an example to the wiki that shows how to use
>>> RequestedRegion on a filter and then paste the filtered region back
>>> into the image.
>>>
>>> http://itk.org/Wiki/ITK/Examples/ImageProcessing/ImageFilterOnARegion#ImageFilterOnARegion.cxx
>>>
>>> On Fri, Feb 3, 2012 at 6:24 AM, Chr. Rossmanith
>>> <cr at neuro.ma.uni-heidelberg.de>    wrote:
>>>> Hi,
>>>>
>>>> I'd like to process only a subregion of an image. A search only gave
>>>>
>>>> http://old.nabble.com/How-to-restrict-work-region-of-filters-td5963437.html
>>>> as a result. Is the ExtractRegionOfInterestFilter + PasteImageFilter
>>>> approach described there still valid or is there a more elegant way?
>>>>
>>>> Christina Rossmanith
>>>> --
>>>> Dept. of Neurology
>>>> University Medical Center Mannheim
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>>>
>
>

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