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The table of the 4096 colors of Thomson microcomputers http://www.logicielsmoto.com/phpBB/viewtopic.php?f=3&t=589 |
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Auteur: | zef [ 10 Fév 2019, 19:19 ] |
Sujet du message: | The table of the 4096 colors of Thomson microcomputers |
I made this table of 4096 colors Thomson microcomputers with relative PALETTE value, you can download it from the following link http://retrohead.appodesign.com/include/images/palette-pc128-cc-giuseppe-stassi.jpg |
Auteur: | gilles [ 11 Fév 2019, 09:14 ] |
Sujet du message: | Re: The table of the 4096 colors of Thomson microcomputers |
great and usefull but a lossless format like png will be better. Here in JPG the image there is 142741 unique colors when importing to gimp (another image software may create a different color count due to different jpg rendering). Fichier(s) joint(s): Capture du 2019-02-11 09-11-53.png [ 117.5 Kio | Vu 12850 fois ] |
Auteur: | zef [ 11 Fév 2019, 19:01 ] |
Sujet du message: | Re: The table of the 4096 colors of Thomson microcomputers |
from the following link you can download the image in PNG without compression http://retrohead.appodesign.com/include/images/palette-pc128-cc-giuseppe-stassi.png |
Auteur: | gilles [ 12 Fév 2019, 18:06 ] |
Sujet du message: | Re: The table of the 4096 colors of Thomson microcomputers |
great, png can also be (losslessly) compressed giving a 440Kb file (the color defect is due to jpeg encoding), which level conversion did you take for RGB value? (The original from TEO emulator was taken with 2 CRT/ PC and TV side by side and contrast/lum to default) |
Auteur: | Samuel Devulder [ 12 Fév 2019, 21:11 ] |
Sujet du message: | Re: The table of the 4096 colors of Thomson microcomputers |
One can clearly see now that the Thomson palette is actually very bright. Lots of colors are very similar. I have once created a regularly spaced palette, the "pertinent" colors reduces from 4096 to something like 512 colors whose difference was at least 12% per component's intensity. To do this, pickup the following indices: 0, 1, 3, 5, 7, 9, 11, 15, this makes a palette of 8x8x8 = 512 regularly spaced colors (approx.) |
Auteur: | zef [ 14 Fév 2019, 00:55 ] |
Sujet du message: | Re: The table of the 4096 colors of Thomson microcomputers |
I'm working on a dynamic palette generation tools, you can see the work in progress from this link: http://retrohead.appodesign.com/motopalette/ if you have any suggestions let me know... |
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