On 7/19/24 13:57, Terry Duell wrote:
Hello David,
On Thu, 2024-07-18 at 18:05 -1000, David W. Jones wrote:
Does anyone on the list know anything about processing PixelShift images in
Linux graphics applications like RawTherapee?
I know that RawTherapee handles Pentax pixelshift files OK, but not sure whether
it handles files from other camera manufacturers.
Tom Vijlbrief made a fork of dcraw which he called dcrawps, which handled PS
files from early Pentax cameras, and with Tom's help I extended dcrawps to
include the PS files from later Pentax cameras.
I suspect it wouldn't be difficult to include PS files from other cameras,
provided they were 4 shots i.e. one image for each of the bayer pattern pixels.
One of the nice things about using dcrawps is that you can extract any or all of
the images, and it can make correction for any movement detected, along with all
the neat things dcraw does.
Not the answer to your question but depending on whether you can use the
software provided and whether it does all the things you need it do, you might
think about dcrawps, maybe have a word with Tom (tvijlbrief at google mail).
Cheers,
Thank you, Terry. Lucas Jirkovsky (in an earlier reply) referred me to
the make_arq Python script and it works very well, once I figured out
how to run a Python script. (Not a Python person here.) It handles
frames from the A7R IVA without any tweaking. It even handled a 16-frame
PixelShift set!
It's good to know there are alternatives to Sony's non-Linux software
for handling their PixelShift images.
Make_arq.py:
https://github.com/agriggio/make_arq
It would be nice if producing a combined PixelShift image could be done
in camera. But I know cameras have to output image files in real time,
so they can't spend a chunk of dedicated time combining the frames. I
wish they did that instead of waste their processing power on AI-based
image processing!
--
David W. Jones
[email protected]
wandering the landscape of god
http://dancingtreefrog.com
My password is the last 8 digits of π.
--
A list of frequently asked questions is available at:
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