[NeXus-committee] dark image

[Eugen Wintersberger]

Hi Tobias
   that sounds great to me. Sorry, I somehow missed the telco yesterday.
The remainder for the event popped up 
today morning ;)

regards
  Eugen

On Tue, 2017-08-08 at 15:21 +0000, Tobias Richter wrote: 

> We talked about this in the telco and came up with suggesting
> `darkfield` and `darkfield_exposure_time` as datasets in NXdetetcor.
> 
>  
> 
> Cheers,
> 
> Tobias
> 
>  
> 
>  
> 
> From:NeXus-committee <nexus-committee-bounces at nexusformat.org> on
> behalf of Mark Koennecke <mark.koennecke at psi.ch>
> Date: Friday, 4 August 2017 at 08:47
> To: Eugen Wintersberger <eugen.wintersberger at desy.de>
> Cc: "nexus-committee at nexusformat.org"
> <nexus-committee at nexusformat.org>
> Subject: Re: [NeXus-committee] dark image
> 
> 
>  
> 
> 
> Hi, 
> 
>  
> 
> 
>  
> 
> 
>         Am 03.08.2017 um 11:45 schrieb Eugen Wintersberger
>         <eugen.wintersberger at desy.de>:
>         
>         
>          
>         
>         Hi folks,
>           just because I stumbled upon this in a detector setup here
>         at DESY: do we have a field in NXdetector where 
>         to store a dark image? I could not find one but that does not
>         necessarily mean that there is none ;)
>         
>         
> 
>  
> 
> 
> We encountered this problem in the NXtomo application definition. We
> were told that in tomography dark and white 
> 
> 
> frame images come interleaved with the real data. Thus all images are
> stored in a 3D dataset nFrames,xdim,ydim and there 
> 
> 
> is an image_key[nFrames] array holding an integer which tells us what
> kind of frame the image is. See the NXtomo 
> 
> 
> application definition for more details. 
> 
> 
>  
> 
> 
> I do not know if this scheme fits your application but if it does, I
> suggest to reuse it. Else I would consider a separate NXdetector 
> 
> 
> group for the dark images. 
> 
> 
>  
> 
> 
> Regards,
> 
> 
>  
> 
> 
>      Mark
> 
> 
>  
> 
> 
>  
> 
> 
> 
> 
> 
> 
>         regards
>           Eugen
>         
>         -- 
>         Dr. Eugen Wintersberger 
>                                 
>         FS-EC                   
>         DESY                     
>         Notkestr. 85                        
>         D-22607 Hamburg                 
>         Germany                             
>                                  
>         
>         
>         
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>         
> 
>  
> 
> 


-- 
Dr. Eugen Wintersberger 
                        
FS-EC                   
DESY                     
Notkestr. 85                        
D-22607 Hamburg                 
Germany                             
                         
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