Eight Years. |
Eight Years. |
Jan 3 2012, 09:14 PM
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#1
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Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Eight years. I mean seriously -- eight years!
-------------------- If Occam had heard my theory, things would be very different now.
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Feb 13 2012, 06:26 PM
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#2
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Member Group: Members Posts: 293 Joined: 22-September 08 From: Spain Member No.: 4350 |
I'm not an expert at all in optics, but I suppose that even if the ambient light is very red, in low light levels the black and white vision (rods) is more efficient that the color vision (cones). So, when displaying an image with normal Earth brighness levels, lower saturation may preserve better the original visual experience.
Here's my version: In GIMP: 1. Go to Balance color and slide the tree balances +10 towards red and -10 towards yellow. 2. In Hue and saturation, drop saturation -40. 3. In Brightness and contrast, +20 brightness and +30 contrast. |
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Feb 14 2012, 12:14 AM
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#3
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
I'm not an expert at all in optics, but I suppose that even if the ambient light is very red, in low light levels the black and white vision (rods) is more efficient that the color vision (cones). So, when displaying an image with normal Earth brighness levels, lower saturation may preserve better the original visual experience . This is it... tested and approved on VL1 and VL2 images at JPL-IPL in 1981-1982 |
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