On Fri, Feb 12, 2021 at 10:48 AM Per Jessen <per@computer.org> wrote:
Roger Oberholtzer wrote:
We have had a request for 12-bit color jpeg images. Sigh
12-bit jpeg Work/openSUSE/General Roger Oberholtzer 9:59 AM (10 hours ago) We have had a request for 12-bit color jpeg images. Sigh. Anyway, isn't it the case that the jpeg library must be compiled for 12-bit instead of 8-bit support? Per Jessen via opensuse.org 10:48 AM (9 hours ago) to users Roger Oberholtzer wrote:
We have had a request for 12-bit color jpeg images. Sigh.
Anyway, isn't it the case that the jpeg library must be compiled for 12-bit instead of 8-bit support?
I would imagine that one could not then replace the system jpeg library with this version.
Has anyone tried 12-bit jpeg support in openSUSE? What was involved?
Hi Roger I know nothing about 12bit jpegs, but I was intrigued and googled it - according to the first page of hits, libjpeg and -turbo both have the support. -- Per Jessen, Zürich (-6.6°C) Per Jessen (computer.org), oS-EN Draft saving… On Fri, Feb 12, 2021 at 10:48 AM Per Jessen <per@computer.org> wrote:
Roger Oberholtzer wrote:
We have had a request for 12-bit color jpeg images. Sigh.
Anyway, isn't it the case that the jpeg library must be compiled for 12-bit instead of 8-bit support?
I would imagine that one could not then replace the system jpeg library with this version.
Has anyone tried 12-bit jpeg support in openSUSE? What was involved?
Hi Roger
I know nothing about 12bit jpegs, but I was intrigued and googled it - according to the first page of hits, libjpeg and -turbo both have the support.
I am trying to find out if one can access both with the same compiled library. The bit of info that we have come across implied that it required different versions of the library. I have had no chance to investigate further. It's on my list. I am also curious how one would view 12-bit red, green or blue on a PC. Perhaps the graphics cards have such support. Or they are simply set to 8-bit values. Which makes the whole exercise mysterious. Graphics files with more info that can't typically be used sounds like a solution in search of a problem. -- Roger Oberholtzer .
Anyway, isn't it the case that the jpeg library must be compiled for 12-bit instead of 8-bit support?
I would imagine that one could not then replace the system jpeg library with this version.
Has anyone tried 12-bit jpeg support in openSUSE? What was involved?
Hi Roger
I know nothing about 12bit jpegs, but I was intrigued and googled it - according to the first page of hits, libjpeg and -turbo both have the support.
I am trying to find out if one can access both with the same compiled library. The bit of info that we have come across implied that it required different versions of the library. I have had no chance to investigate further. It's on my list. I am also curious how one would view 12-bit red, green or blue on a PC. Perhaps the graphics cards have such support. Or they are simply set to 8-bit values. Which -- Roger Oberholtzer