[Cin] Reverse Tone Mapping paper from 2007

[Andrew Randrianasulu]

вс, 11 мая 2025 г., 23:21 Andrew Randrianasulu <randrianasulu at gmail.com>:

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> вс, 11 мая 2025 г., 22:53 Andrew Randrianasulu <randrianasulu at gmail.com>:
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>> вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu <randrianasulu at gmail.com>:
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>>>
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>>> вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu <randrianasulu at gmail.com
>>> >:
>>>
>>>> Today you can find more refined ideas, papers and implementations, but
>>>> it all started somewhere ...
>>>>
>>>> https://vccimaging.org/Publications/Rempel2007L2H/Rempel2007L2H.pdf
>>>>
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>> Ah, wiki article on one of the first HDR displays from 2005:
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>> https://en.m.wikipedia.org/wiki/DR37-P
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>> 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
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>> wow, $50 000 watercooled (!) 37" display!
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>> 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.)
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>> Still, it was connected via DVI , not sure at that bit depth and
>> colorspace ...
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> And looking at their (BrightSide's) archived webpage ( Dolby  bought them)
> I see such gems as
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> https://web.archive.org/web/20060721021656/http://www.brightsidetech.com/tech/papers/siggraph2004.pdf
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> Basically DIY HDR display from LCD + Projector, driven by dual vga outputs
> of ordinary for that era PC graphics cards ;)
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And modern reincarnation of this idea, using OBS's plugins!

https://m.youtube.com/watch?v=qXrn4MqY1Wo
"DIY "infinity contrast" TV - with 100% recycled parts" from two months
ago, initially found by my friend Vladimir after I showed him all this.

added two more recipients in cc.

Pekka, you might like this too, as less secretive description of how HDR
part of HDR display system works.



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>> PS: I played around with Colorspace property on my hdmi connector on
>> RX550 via xrandr:
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>> 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?
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>> opRGB = Adobe RGB as far as I can see in Wiki.
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>>>
>>> more recent 2020 paper
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>>> 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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