Mars Express Color Images Options

[stevo]

Bob,
Thanks for the detailed response. I was taking ESA's word for the volcanic thing, it's been 1/2 a lifetime and change since I last studied geology and I remember just enough to understand what people are talking about.
Wouldn't it be fun to be there, just walking around ...
Stephen

[Malmer]

Since they have the 3d DEM data and know the geometry of the lighting they could easily divide out the shading from the images and create reasonably accurate albedomaps. Have anyone tried this?

Would be nice to have an "unshaded" dataset to be able to render the martian surface under any lighting condition.

I used a stereo correlation software called "ZK stereo" to generate dems from the anaglyphs on the web but its not the greatest software in the world. it could really use some help from shape from shading to improve its solution... and using jpg compressed anaglyphs really doesnt help

I made some simple flybys in open gl that where nice. But the garish colors that ESA used in their first releases really did not help the look too much...

It looks to mee that esa is only using stereo correlation to make their dems. They should use shading information as well to improve the resolution.

/M

[ustrax]

Margaritifer Terra in full splendor:

http://sci.esa.int/science-e/www/object/in...fobjectid=39388

[djellison]

Swath Angle 29.1°
Outer Stereo Angle ± 20.5° 520-760 nm
Inner Stereo Angle ± 12°
Nadir Channel 0°
Blue Channel - 4.6° 435-520 nm
Green Channel - 2.3° 522-592 nm
Red Channel + 2.3° 626-686 nm
IR Channel + 4.6° 780-850 nm

I'm not sure how, if at all, that matches up with the space-borne version - but I've noticed some fairly extreme miss-matching just between the IR, G and B channels when looking at harsh elevation such as at Val.Mar.

Has anyone been able to find something better than these figures?

Doug

[Sacha Martinetti...]

Margaritifer Terra in full splendor:

Nobody says anywhere on ESA site that this picture is a color anaglyph, in wrong rotation (we must rotate it 90° at right) or it's me ?


Sacha (one of the thousands enjoyed lurkers)

PS Thanks again for your upper smart forum I read dayly since MERs launches. And I apologyze one more time about my poor english. But I'm working hard