[Cin] Reverse Tone Mapping paper from 2007

[Andrew Randrianasulu]

вс, 11 мая 2025 г., 22:53 Andrew Randrianasulu <randrianasulu at gmail.com>:

>
>
> вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu <randrianasulu at gmail.com>:
>
>>
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>> вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu <randrianasulu at gmail.com>:
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>>> 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:
>
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> https://web.archive.org/web/20070122160003/http://www.bit-tech.net/hardware/2005/10/03/brightside_hdr_edr/1.html
>
> 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/tech/papers/siggraph2004.pdf

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 at slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set
> Colorspace Default
> guest at slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set
> Colorspace BT2020_YCC
> guest at slax:~/botva/src/src$ DISPLAY=":0" xrandr --output 0x54 --set
> Colorspace Default             guest at slax:~/botva/src/src$ DISPLAY=":0"
> xrandr --output 0x54 --set Colorspace opRGB               guest at 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/3E58E1A14BC6543EB47B6C3B1A172C96/S2048770320000050a.pdf/fully-automatic-inverse-tone-mapping-algorithm-based-on-dynamic-mid-level-tone-mapping.pdf
>>
>>
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