[NeXus-committee] dark image

[Koennecke Mark (PSI)]

Hi,


Am 03.08.2017 um 11:45 schrieb Eugen Wintersberger <eugen.wintersberger at desy.de<mailto: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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