RE: CSS Boy and Signed/Unsigned Int Issue

[<matthew.furseman@diamond.ac.uk>]

Hi Ian,

At Diamond we wanted this functionality so we made a patch which converts the data (on the UI thread) for the intensity graph. As this may negatively affect the performance, and doesn't use the new Java 8 unsigned type for the conversion, it isn't merged into CSS. You can see the discussion and pull request here:

https://github.com/ControlSystemStudio/cs-studio/issues/823

Thanks,
Matt
________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of ian.bush@stfc.ac.uk [ian.bush@stfc.ac.uk]
Sent: 08 April 2015 12:01
To: tech-talk@aps.anl.gov
Subject: CSS Boy and Signed/Unsigned Int Issue

Hi all,

I am having a problem with a camera that uses unsigned 8-bit integers for its values, which get interpreted as -127 --> 128 instead of 0 --> 255 in CSS BOY.

I saw on a previous discussion there was a suggested workaround (http://www.aps.anl.gov/epics/tech-talk/2014/msg00510.php), but this does not work for me due to some auto-normalisation scripts we are using, and this would also prevent choosing color maps.

I was just wondering if anyone had found a better solution to the issue? Trying to use a Python script to correct the values seems to be extremely slow.

Thanks,
Ian



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