[Insight-users] ITK measurement units

[Michael Halle]

Karthik Krishnan wrote:
> Michael Halle wrote:
> 
>> ...
>>
>> Related to this topic, has there ever been any discussion about 
>> retaining measure and unit names for different data dimensions through 
>> standardized fields in the metadata dictionary?
>>
>> I'd suggest two fields for each dimension: the first describing the 
>> quantity being measured, the second the unit of measure.  For example:
>>
>> "spatial extent" "mm"
>> "time" "second"
>>
>> In the simplest case, ITK wouldn't interpret these strings at all, 
>> just store them in a standard field for the pipeline to use if it wanted.
> 
> The metadata dictionary as it is now, isn't propagated through the 
> pipeline at all. Something that it might be worthwhile having the 
> itk::ProcessObject do in future.

I understand.  At any rate, though, the reader has to get the 
information out of the file and put it somewhere.  The metadata 
dictionary's the right place to put it, right?

--Mike