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This post about coloring old photos in Photoshop makes me think...

Posted by Mop (200 lbs) (aka rburriel) Aug 21 '13, 15:48

If we could identify certain colors which we know are definite, such as the red in the Coca-Cola sign in the gas station picture, then I think we should be able to run algorithms that translate shades of grey into corresponding true color.

Mop

http://petapixel.com/2013/08/21/colorizing-photoshoppers-put-a-new-spin-on-old-historical-photos/ (petapixel.com)

Responses:

no, there are a lot of colors with the same gray tone rendering but distinct different color hue, terra cotta against blue sky is a famous one - zeitgeist Aug 21, 19:40 1
- also the kind of film effects translation of gray scale, IE: orthopan or panchromatic - zeitgeist Aug 21, 19:45

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This post about coloring old photos in Photoshop makes me think...

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