[ITK] write BufferedRegion to file

[Bradley Lowekamp]

You are going to need to place an ExtractImageFilter between you reader and your writer.

Brad

On May 6, 2014, at 4:43 AM, David Froger <david.froger.ml at mailoo.org> wrote:

> Solved.
> 
> The segfault was indeed a bug in my example, line:
>  WriterType::Pointer writer;
> should be replaced:
>  WriterType::Pointer writer = WriterType::New();
> 
> The RegionOfInterestImageFilter filter work as expected (example attached).
> 
> Without RegionOfInterestImageFilter, it doesn't segault, but the largest
> possible region is automatically read by the reader, and written by the 
> writter.
> 
> David
> 
> Quoting David Froger (2014-05-06 09:09:23)
>> Dear all,
>> 
>> I'm reading in an HDF5 file a subregion of an image, and want to create a new
>> file with this subregion.
>> 
>> For example, the HDF5 file contains a vector image of dimensions (4,4,4,4),
>> and I read (2,2,2) pixels starting from pixel (1,1,1).
>> 
>> If I try to write the subregion in a new file, ITK try to write the largest
>> possible region, and it yields to a segfault.
>> 
>> I tried to use image->SetLargestPossibleRegion, image->SetRequestedRegion, 
>> image->SetBufferedRegion, writer->SetIORegion, RegionOfInterestImageFilter,
>> ExtractImageFilter without success.
>> 
>> Does someone has the solution?
>> 
>> Example files of what I'm trying to do are attached.
>> 
>> Thanks for reading.
>> 
>> Best regards,
>> David
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