Mars Rover Picture Analysis Discussion, page 6
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reply posted on 31-1-2004 @ 01:31 PM by BarryKearns
Originally posted by ArchAngel
Any 'color' images other than L456 images should not be put up on NASA's press page. There is no valid reason for doing anything else.

That all of the most viewed 'color' pictures are not L456, and most people believe that they are color proves that there is a conspiracy.

The results are that the vast majority of people believe these are color images. The results are a lie.


Now, now... let's not overstate the situation. It's certainly doesn't PROVE a conspiracy. It might SUGGEST one, but a suggestion is not proof.

Personally, I'm at the point where I think the whole thing will come down to simple bad judgement, as opposed to anything sinister.

It would have been nice if the initial L2-L5-L6 images had come with disclaimers that they didn't represent colors as humans would see them.

If we get the full raw data from these L4-L5-L6 calibration shots with the terrain and the calibration tool in the same shot, and a few panoramas with L4-L5-L6, I think we can say with a high degree of confidence what the surface actually looks like.

The surprisingly wide variety of offered colorizations of (ostensibly) the same terrain leaves NASA with more than a little egg on its face IMO, but it's certainly a "recoverable" situation.

Again, it would be nice if they would come out and explain why the "approximate true color" images that they released on Jan 19th of Sushi, Sashimi and Adirondack (using L4-L5-L6) are so different from the most recent L4-L5-L6 pictures. I hardly think both can be considered "right" by reasonable people.

Putting out that much variety is certain to get some people questioning just how effective the crew is at reliably producing images that reasonably match a human's vision... are they just figuring it out as they go along?

Once they decide that they finally have it "figured out", are they going to go back and provide corrected versions of the inaccurate ones that they put out?


[Edited on 1-31-2004 by BarryKearns]


reply posted on 1-2-2004 @ 09:48 AM by rgclark
Originally posted by Kano
Excellent find, thankyou slinter.

Also, from the latest press release:



Larger image here:
marsrovers.jpl.nasa.gov...

Ground sky and sundial in one frame. (Sky in sundial mirrors).


Judging from the color of the mirrors at the sides of the circle around the sundial, the sky looks orange to a tan color. I'm surprised that you can see the surface in this image with the sundial. I was told the field of view of the camera is too small to allow that.
See for example this image:



Note that in the high Sun image, judging by the mirrors, the sky is not red here. I would guess a dark grey, perhaps with a dark blue to dark purple component. The mirrors in the low Sun image do look rather orange. Note also the surrounding circle with the mirrors (the part that says "Two worlds One Sun") rather follows the color of the mirror.
Because of the color of the mirrors I was going to say the first image above was taken during low Sun. But look at the shadow of the post. This shows it was taken during high Sun.
I would be interested to find out why the two high Sun images wound up with different colors, and in fact the first image above looks more like the low Sun case.
Note also the whitish, rectangular object to the right of the sundial. In the first image above the circle in its center has a color quite close to that of the orange tab on the sundial. Yet in the second image in both the high sun case and the low sun case, the circle's color is much more muted. Do you think there could have been some colorization applied to the first image above in addition to straight brightness normalization and combination of the different filter images?
Perhaps you can ask Jim Bell about this.


Bob Clark


reply posted on 17-1-2006 @ 04:26 PM by StellarX
Well since this is the right thread here it is.

xfacts.com...

And this one is from the enterprise mission ( i forget where).

img496.imageshack.us...

The reason for wanting to change the colour is imo to make colonization seem expensive and thus easy to move off the table while Nasa goes on with it's primary military orientated mission.

Stellar
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