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| 02:31 | Bertl | off to bed now ... have a good one everyone!
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| 08:26 | se6astian | good morning
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| 10:01 | Bertl | morning folks!
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| 15:15 | intracube | afternoon all
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| 15:20 | se6astian | hi there
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| 15:22 | intracube | hey se6astian
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| 15:27 | intracube | has been reading about the TAG CDMX trip
| | 15:27 | intracube | se6astian: do you know if there is any video online of the presentations (in english?)
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| 15:38 | se6astian | not that I know of
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| 15:41 | Bertl | intracube: they have been recording but I think they do not plan to have everything online
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| 15:42 | Bertl | but I will upload a compacted version of my slides soon, so the information should be there
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| 15:42 | intracube | se6astian: Bertl: okies
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| 15:42 | intracube | Bertl: nice, I look forward to that
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| 15:43 | Bertl | it is mostly a historical timeline from my personal perspective
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| 15:45 | intracube | I'm curious about what limits for the FPGA processing will be.
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| 15:45 | intracube | some of this info is already on apertus.org
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| 15:46 | intracube | I guess the details won't be known until the code is written and the processing is benchmarked?
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| 15:46 | Bertl | you can get a good estimate with the xilinx tools
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| 15:47 | Bertl | i.e. if you have some specific code, you can see how many resources, power, etc it will consume
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| 15:57 | intracube | Bertl: will it be possible to apply different LUTS to the 3 HDMI outputs?
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| 15:58 | Bertl | depends on the LUT and how complex it is
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| 15:58 | Bertl | a simple separate linear LUT doesn't cost much, i.e. that is no problem x3
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| 15:59 | Bertl | a complex 3D deep color LUT costs very much, I doubt that will be doable for 3 outputs
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| 16:13 | intracube | Bertl: by simple do you mean a 1D LUT for each of the RGB channels?
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| 16:13 | intracube | then x 3 for each HDMI?
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| 16:14 | intracube | ie, the type of LUT that can be loaded onto a typical computer video card
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| 16:15 | Bertl | yes, for example
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| 16:15 | intracube | ah, that's good
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| 16:15 | Bertl | it basically requires a memory resource per channel
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| 16:16 | intracube | Bertl: not sure if you saw this: https://wiki.apertus.org/index.php?title=User:Intracube#CMOSIS_CMV12000_registers
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| 16:16 | intracube | data parsed from cmosis pdf
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| 16:17 | Bertl | ah, nice
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| 16:17 | intracube | ..*hopefully* all the data is correct. I had to do a bit of manual editing too ;)
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| 16:18 | intracube | I've got a reasonable work-flow so if there's any data in other pdfs, it can be converted fairly quickly
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| 16:21 | Bertl | good to know
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| 16:42 | Bertl | off for a nap ... bbl
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| 17:36 | troy_s | intracube: Aka transfer curve LUT per vhannel
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| 17:36 | troy_s | Channel even
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| 17:37 | troy_s | intracube: A rather fascination email from Mr. Fairchild the other day that you may be interested in...
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| 17:38 | troy_s | intracube: Did you know that scene referred imaging can result in escaping the original chromaticities of the primary lights?
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| 18:24 | intracube | troy_s: ?
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| 18:25 | intracube | do you mean like biofluorescent surfaces like flowers?
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| 19:06 | troy_s | intracube: No. Indirect lighting does it.
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| 19:07 | troy_s | intracube: Basically RGB is pre-baked spectral. Indirect lighting (two RGB images for example, multiplied) pushes the luminance and chromaticities outwards.
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| 19:08 | danieel | i think it just can redistribute the non-narrow band of primaries, to make the average/peak somewhere else
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| 19:08 | troy_s | It is the basics of physics. Happens in the physical world as well.
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| 19:08 | danieel | you cant change the wavelengt without fluorescence... can you?
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| 19:08 | troy_s | The main issue is that folks have a very legacy view of imaging (IE display referred)
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| 19:09 | troy_s | Indirect lighting does this. It is a multiplication.
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| 19:09 | troy_s | So for example, if you have an sRGB set of primaries, and you use a scene referred model, the results of multiplication will expand in luminance and, as a result, chromaticity.
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| 19:10 | troy_s | Basically it has to do with greater than one source, which for all intents and purposes is two RGB images, two sources, or whatever.
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| 19:10 | danieel | the multiplication happens where?
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| 19:11 | troy_s | Indirect lighting does it. Or an image operation that simulates it via multiplication of two regions via nodes or layers.
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| 19:11 | danieel | well, if you shine red light on orange surface, it will get red... that is what you talk about?
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| 19:12 | troy_s | (A red petal illuminated by a red light for example, or a red petal illuminated by an adjacent petal lit up.)
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| 19:12 | troy_s | Sort of. It goes deeper than that.
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| 19:13 | troy_s | It reveals a rather horrific misunderstanding of models (IE display referred versus scene referred) and legacy ideas of imaging (that your imaging is agnostic or unrelated to your primaries)
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| 20:08 | Bertl | back now ...
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| 20:09 | Bertl | actually it depends on the orange surface, it is possible that it just absorbs the red light and stays exactly the same :)
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| 20:53 | intracube | troy_s: sorry, I don't get it
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| 21:15 | intracube | bed time
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| 21:15 | intracube | changed nick to: intracube_afk
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| 21:19 | se6astian | me too
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| 21:19 | se6astian | of to bed
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