[Insight-users] RequestedRegion and LargestPossibleRegion

[Mathieu Malaterre]

recall -> remember
and
UpdateWholeExtent -> UpdateLargestPossibleRegion

(Too much VTK in my coffee this morning)
Sorry,
mathieu

Mathieu Malaterre wrote:
> George,
>     I recall having posted the very same question:
> 
> http://www . itk . org/pipermail/insight-users/2003-February/002615 . html
> 
> There should also be some posts before this one that mention the fact 
> that FileWriter call UpdateWholeExtent so you have two options:
> 
> - Hack FileWriter and replace GetLargestPossibleRegion -> 
> GetRequestedRegion.
> 
> - Use PasteImageFilter:
> http://www . itk . org/Doxygen/html/classitk_1_1PasteImageFilter . html
> 
> Good luck
> mathieu
> 
> 
> Iordanescu, Gheorghe (NIH/CC/DRD) wrote:
> 
>> Hello everybody,
>>
>>  
>>
>> Here is my problem: I have a 3D data set (512x512x200) and I want to 
>> process only a very small part of it (lets say 100x100x30) and save 
>> the results as an image of the same dimensions (in pixels) as the 
>> input data (i.e 512x512x200). Since I am not concerned with the rest 
>> of the image, it could have any value (either the values of the input 
>> image or some constant value)
>>
>>  
>>
>> What is the simplest way to process only a part of an image, but be 
>> able to save the whole image?
>>
>>  
>>
>> Is there a way to fill the largest possible region of an image (of the 
>> output of a filter) with some default value?
>>
>> Should I use a blank image (filled with 0) of dimension 512x512x200 
>> and add to it somehow only the small output of the filter? Should I 
>> use an iterator and fill only the non-filtered area of the image?
>>
>>  
>>
>> Thank you,
>>
>>  
>>
>> George
>>
> 
> 


-- 
Mathieu Malaterre
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