Hi, The demosaic none option is specifically requesting no demosaicing to be done on the raw data, so your image will be grey scale, and likely still in an RGGB "Bayer" pattern. Each "pixel" in this returned image is exactly what each photosite captured.
It sounds like it is working as expected, but this mode probably isn't useful to you. Demosaicing is a crucial step in raw processing, and there are only limited times where you might want to disable it. As for the highlight mode issue, the reason your highlights are pink is because your green and blue channels have clipped at a lower level than the red channel. I have a new mode that I've been meaning to put a merge request in for that will try to determine your lowest clipped channel and then clamp the other channels to it, but it's not released yet. Note that this will lose information from that red channel, but often at such high sensor saturation the data is not often useful. In the mean time you should be able to clamp your images manually, though you might need to run them through once to determine what the correct value should be. It'll be whichever channel value is lowest in your pink highlight areas. Cheers, Mark On Tue, 27 Jul 2021, 09:13 Vlad, <[email protected]> wrote: > > > On Fri, 23 Jul 2021 at 10:19, Larry Gritz <[email protected]> wrote: > >> These options are all directly passed to the underlying "LibRaw", so you >> should consult the LibRaw documentation about what they do and what values >> are reasonable for the effects you want. >> >> As far as Demosaic, if you say "none", I would expect it to give you a >> grayscale image, yes. (I have not tried this. I guess it's possible that in >> addition to grayscale, is it broken in other ways?) >> >> > Yes, result looks like some bits order is missed. Image looks like image > with highly skewed lines and two big top and bottom black borders. > > >> >> On Jul 22, 2021, at 1:01 AM, Vlad <[email protected]> wrote: >> >> Hi everyone. >> >> I traying to find a way to use OpenimageIO and RAW plugin to camera raw >> image processing. >> And some options ro RAW plugin give weird results. >> >> For example: >> oiiotool.exe --iconfig raw:Demosaic none ARW\_DSC4410.ARW -o >> ARW\_DSC4410_.TIF >> >> give me grayscale image that looks like it missed some pixel order. >> >> raw:Demosaic linear or any other available demosaic options work as >> expected. >> >> >> >> Another issue i can't figure out because no information on plugin page in >> --iconfig raw:HighlightMode 1 (unclip) >> it give me pink color on highlights. >> >> What i need chose to convert RAW image as Unclipped dynamic range to int >> 16 bit or 16/32bit floats? >> >> Or this issues looks more like a bugs and better report them? >> >> Best regards >> Vlad >> _______________________________________________ >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> >> >> -- >> Larry Gritz >> [email protected] >> >> >> >> >> _______________________________________________ >> Oiio-dev mailing list >> [email protected] >> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >> > _______________________________________________ > Oiio-dev mailing list > [email protected] > http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org >
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