вс, 11 мая 2025 г., 22:53 Andrew Randrianasulu <[email protected]>:
вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu <[email protected]>:
вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu <[email protected]>:
Today you can find more refined ideas, papers and implementations, but it all started somewhere ...
https://vccimaging.org/Publications/Rempel2007L2H/Rempel2007L2H.pdf
Ah, wiki article on one of the first HDR displays from 2005:
https://en.m.wikipedia.org/wiki/DR37-P
and it links to Wayback Machine-saved article explaining this monitor:
https://web.archive.org/web/20070122160003/http://www.bit-tech.net/hardware/...
wow, $50 000 watercooled (!) 37" display!
It used same technology of many specific illumination "zones" as many today's HDR monitors (no wonder, this BrightSide firm said they patented it and sold to various display manufacturers.)
Still, it was connected via DVI , not sure at that bit depth and colorspace ...
And looking at their (BrightSide's) archived webpage ( Dolby bought them) I see such gems as https://web.archive.org/web/20060721021656/http://www.brightsidetech.com/tec... Basically DIY HDR display from LCD + Projector, driven by dual vga outputs of ordinary for that era PC graphics cards ;)
PS: I played around with Colorspace property on my hdmi connector on RX550 via xrandr:
guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace BT2020_YCC guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace opRGB guest@slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set Colorspace Default
Anything but Default resulted in VERY pink (nearly red!) image. Not sure if this is limitation of 8bit per channel mode or hdmi to vga adapter I use?
opRGB = Adobe RGB as far as I can see in Wiki.
more recent 2020 paper
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/3E58...