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<== Date ==> <== Thread ==>

Subject: Re: Phoebus Image Decompression
From: "Kasemir, Kay via Tech-talk" <tech-talk at aps.anl.gov>
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>, "Smith, William" <william.smith at helmholtz-berlin.de>
Date: Mon, 22 Nov 2021 17:33:08 +0000
Hi Will,

> Does Phoebus image viewer work with area detector compressed images sent over PV access? I.E can it read the compression type from the PV access protocol and perform the decompression?
 
At this time, regrettably, no. The relevant code is in https://github.com/ControlSystemStudio/phoebus/blob/master/core/pv/src/main/java/org/phoebus/pv/pva/ImageDecoder.java

In principle, it's straight forward to add something like `struct.get("compression")` to determine how the data is compressed, and to then un-compress the `value`.
If you have some actual test data and information on how to decode the compressed image, please go ahead and implement it.

Thanks,
Kay



Replies:
RE: Phoebus Image Decompression Mark L Rivers via Tech-talk
References:
Phoebus Image Decompression Smith, William via Tech-talk

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