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| Authored by: Anonymous on Thursday, June 20 2013 @ 06:10 PM EDT |
1. Dust storms happen on Mars, but not all the time. There is less airborne dust
on Mars due to the extremely low air pressure. Dust particles settle faster,
too.
2. Sodium lamps and car colors? Let's not use strawman arguments. The color
balance of sunlight is the same on Mars as it is on Earth. All you need is the
spectral sensitivity curves of the sensors to 'calibrate' the image display
system, but color patches are the most accurate and simplest way to do it.
3. In the past, NASA has provided raw image data. Photographic experts disagreed
because NASA was altering the color balance. Go back and look at the color
patches on earlier missions. They are totally off.
An earlier trick they used was replacing the 'red' sensor with an infrared one,
thus making it impossible to get an 'accurate' red level.
Increasing the red balance wipes out blues and greens, which is exactly what
they want to do.
You can experiment with an image editor. PhotoShop, Gimp, etc. There was one
for Windows which name escapes me. It was almost as good as PhotoShop, but way
cheaper.
There are also plenty of examples of color-corrected NASA imagery on the Web.
[ Reply to This | Parent | # ]
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- Hmmmmm - Authored by: Anonymous on Thursday, June 20 2013 @ 09:02 PM EDT
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