Re: [Cin] Reverse Tone Mapping paper from 2007
On Mon, 12 May 2025 15:52:04 +0300 Andrew Randrianasulu wrote: > 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. Hi Andrew, that's a neat project for sure. > >> 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? Maybe https://gitlab.freedesktop.org/drm/amd/-/issues/3358 ? Thanks, pq pgpgWDs8rZRpY.pgp Description: OpenPGP digital signature -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Re: [Cin] Reverse Tone Mapping paper from 2007
вт, 13 мая 2025 г., 12:11 Pekka Paalanen : > On Mon, 12 May 2025 15:52:04 +0300 > Andrew Randrianasulu wrote: > > > 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. > > Hi Andrew, > > that's a neat project for sure. > > > >> 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? > > Maybe https://gitlab.freedesktop.org/drm/amd/-/issues/3358 ? > Ah, thanks, looks similar, while I tested with fullscreen firefox window (triggered xrandr from remote ssh session). > > > > > > Thanks, > pq > -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Re: [Cin] Reverse Tone Mapping paper from 2007
вс, 11 мая 2025 г., 23:21 Andrew Randrianasulu : > > > вс, 11 мая 2025 г., 22:53 Andrew Randrianasulu : > >> >> >> вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu : >> >>> >>> >>> вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu >> >: >>> 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/2005/10/03/brightside_hdr_edr/1.html >> >> wow, $50 000 watercooled (!) 37" display! >> >> It used same technology of many specific illumination "zones" as many >> today's HDR monitors (no wonder, this BrightSide firm said they patented it >> and sold to various display manufacturers.) >> >> Still, it was connected via DVI , not sure at that bit depth and >> colorspace ... >> > > And looking at their (BrightSide's) archived webpage ( Dolby bought them) > I see such gems as > > > https://web.archive.org/web/20060721021656/http://www.brightsidetech.com/tech/papers/siggraph2004.pdf > > Basically DIY HDR display from LCD + Projector, driven by dual vga outputs > of ordinary for that era PC graphics cards ;) > > And modern reincarnation of this idea, using OBS's plugins! https://m.youtube.com/watch?v=qXrn4MqY1Wo "DIY "infinity contrast" TV - with 100% recycled parts" from two months ago, initially found by my friend Vladimir after I showed him all this. added two more recipients in cc. Pekka, you might like this too, as less secretive description of how HDR part of HDR display system works. > > > > >> PS: I played around with Colorspace property on my hdmi connector on >> RX550 via xrandr: >> >> guest@slax:~/botva/src/src$ 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/3E58E1A14BC6543EB47B6C3B1A172C96/S204877032050a.pdf/fully-automatic-inverse-tone-mapping-algorithm-based-on-dynamic-mid-level-tone-mapping.pdf >>> >>> >>> -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Re: [Cin] Reverse Tone Mapping paper from 2007
вс, 11 мая 2025 г., 22:53 Andrew Randrianasulu : > > > вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu : > >> >> >> вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu : >> >>> 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/2005/10/03/brightside_hdr_edr/1.html > > wow, $50 000 watercooled (!) 37" display! > > It used same technology of many specific illumination "zones" as many > today's HDR monitors (no wonder, this BrightSide firm said they patented it > and sold to various display manufacturers.) > > Still, it was connected via DVI , not sure at that bit depth and > colorspace ... > And looking at their (BrightSide's) archived webpage ( Dolby bought them) I see such gems as https://web.archive.org/web/20060721021656/http://www.brightsidetech.com/tech/papers/siggraph2004.pdf Basically DIY HDR display from LCD + Projector, driven by dual vga outputs of ordinary for that era PC graphics cards ;) > PS: I played around with Colorspace property on my hdmi connector on RX550 > via xrandr: > > guest@slax:~/botva/src/src$ 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/3E58E1A14BC6543EB47B6C3B1A172C96/S204877032050a.pdf/fully-automatic-inverse-tone-mapping-algorithm-based-on-dynamic-mid-level-tone-mapping.pdf >> >> >> -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Re: [Cin] Reverse Tone Mapping paper from 2007
вс, 11 мая 2025 г., 21:49 Andrew Randrianasulu : > > > вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu : > >> 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/2005/10/03/brightside_hdr_edr/1.html wow, $50 000 watercooled (!) 37" display! It used same technology of many specific illumination "zones" as many today's HDR monitors (no wonder, this BrightSide firm said they patented it and sold to various display manufacturers.) Still, it was connected via DVI , not sure at that bit depth and colorspace ... PS: I played around with Colorspace property on my hdmi connector on RX550 via xrandr: guest@slax:~/botva/src/src$ 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/3E58E1A14BC6543EB47B6C3B1A172C96/S204877032050a.pdf/fully-automatic-inverse-tone-mapping-algorithm-based-on-dynamic-mid-level-tone-mapping.pdf > > > -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
Re: [Cin] Reverse Tone Mapping paper from 2007
вс, 11 мая 2025 г., 21:23 Andrew Randrianasulu : > Today you can find more refined ideas, papers and implementations, but it > all started somewhere ... > > https://vccimaging.org/Publications/Rempel2007L2H/Rempel2007L2H.pdf > more recent 2020 paper https://www.cambridge.org/core/services/aop-cambridge-core/content/view/3E58E1A14BC6543EB47B6C3B1A172C96/S204877032050a.pdf/fully-automatic-inverse-tone-mapping-algorithm-based-on-dynamic-mid-level-tone-mapping.pdf -- Cin mailing list Cin@lists.cinelerra-gg.org https://lists.cinelerra-gg.org/mailman/listinfo/cin
