[ITK] [ITK-users] question about wiki example ResampleDICOM

Arnaud Gelas arnaudgelas at gmail.com
Wed Sep 17 09:10:43 EDT 2014


I have been modifying extensively this example...
Rescale slope/intercept are saved with expected values -1024 and 1.

Not sure if the error is in my code or in this example, but when I compare
inputs and outputs with the ShiftScale part all pixels are different (and
the difference is -1024)... that's why I am asking if this part is still
valid?

On Wed, Sep 17, 2014 at 3:06 PM, Nick Patterson <pattersonnp.work at gmail.com>
wrote:

> Ok thanks. When you say that it doesn’t work anymore would I be correct in
> assuming that you mean that the output rescale slope/intercept are written
> out as 1 and 0, rather than the expected value of -1024 and 1? Or do you
> mean not working in some other way?
>
> Nick.
>
>
>
> On 17 Sep 2014, at 14:04, Arnaud Gelas <arnaudgelas at gmail.com> wrote:
>
> Hi Nick,
>
> I work with CT images, Rescale Intercept / Slope: ( -1024, 1 )
>
> I use system gdcm (release branch from official git repository)
>
> Thanks
> Arnaud
>
> On Wed, Sep 17, 2014 at 3:01 PM, Nick Patterson <
> pattersonnp.work at gmail.com> wrote:
>
>> Arnauld,
>>
>>  Can you also say if you are using the version of GDCM bundled with ITK
>> release or have you compiled a system version of GDCM from the
>> git-repository?
>>
>> Nick.
>>
>>
>> On 17 Sep 2014, at 13:59, Nick Patterson <pattersonnp.work at gmail.com>
>> wrote:
>>
>> Arnauld,
>>
>> Which modality image are you working with, and what are the rescale slope
>> and intercept of the original image?
>>
>> Nick.
>>
>>
>>
>>
>> On 17 Sep 2014, at 14:02, Arnaud Gelas <arnaudgelas at gmail.com> wrote:
>>
>> Hi all,
>>
>> I have been looking at the following wiki example:
>>
>> http://www.itk.org/Wiki/ITK/Examples/DICOM/ResampleDICOM
>>
>> It seems to me that the section to rescale the image is not valid anymore
>> with latest ITK version (?)
>>
>>
>> https://github.com/InsightSoftwareConsortium/ITKWikiExamples/blob/master/DICOM/ResampleDICOM.cxx#L314-L333
>>
>> Can anyone confirm?
>>
>> Is this code validated? are output images compared to input ones in the
>> corresponding test?
>>
>> Thanks
>> Arnaud
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