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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">We talked about this in the telco and came up with suggesting `darkfield` and `darkfield_exposure_time` as datasets in NXdetetcor.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri;mso-fareast-language:EN-US">Tobias<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-family:Calibri;color:black">From:
</span></b><span style="font-family:Calibri;color:black">NeXus-committee <nexus-committee-bounces@nexusformat.org> on behalf of Mark Koennecke <mark.koennecke@psi.ch><br>
<b>Date: </b>Friday, 4 August 2017 at 08:47<br>
<b>To: </b>Eugen Wintersberger <eugen.wintersberger@desy.de><br>
<b>Cc: </b>"nexus-committee@nexusformat.org" <nexus-committee@nexusformat.org><br>
<b>Subject: </b>Re: [NeXus-committee] dark image<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Hi, <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Am 03.08.2017 um 11:45 schrieb Eugen Wintersberger <<a href="mailto:eugen.wintersberger@desy.de">eugen.wintersberger@desy.de</a>>:<o:p></o:p></p>
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Hi folks,<br>
just because I stumbled upon this in a detector setup here at DESY: do we have a field in NXdetector where
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to store a dark image? I could not find one but that does not necessarily mean that there is none ;)<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">We encountered this problem in the NXtomo application definition. We were told that in tomography dark and white <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">frame images come interleaved with the real data. Thus all images are stored in a 3D dataset nFrames,xdim,ydim and there <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">is an image_key[nFrames] array holding an integer which tells us what kind of frame the image is. See the NXtomo <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">application definition for more details. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">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 <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">group for the dark images. <o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Regards,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"> Mark<o:p></o:p></p>
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regards<br>
Eugen<o:p></o:p></p>
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<p class="MsoNormal">-- <br>
Dr. Eugen Wintersberger <br>
<br>
FS-EC <br>
DESY <br>
Notkestr. 85 <br>
D-22607 Hamburg <br>
Germany <br>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">_______________________________________________<br>
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http://lists.nexusformat.org/mailman/listinfo/nexus-committee<o:p></o:p></p>
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