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Nirgal
After having discovered the proper calibration process for the black&white CTX images (thanks again
to slinted, cartrite and others for the valuable contributions !) I found that many of the cleaned up CTX images with the increased dynmiac range are
very well suited candidates for artificial colorization. Here are the first results:

A martian polar dust storm over ice dunes


and a crater landscape with central mountains:



Please keep in mind that, as always with artificial colorization, the colors, although I usually do base the palettes on "real" color images of similar areas with similar surface composition, are, of course not intended to reflect the "true colors" but rather be understood as a kind of "artitst impression"

Stu
Lost for words, truly... ohmy.gif ohmy.gif ohmy.gif
slinted
Absolutely gorgeous Nirgal! Great picks, and colors!
ngunn
I'm enjoying these too, but I expected the dust clouds to look yellower, relative to the surface. Have I been looking at too many Chesley Bonestell paintings?
tedstryk
Simply amazing!
n1ckdrake
Outstanding work Nirgal! Thanks for posting these!
Nirgal
Here are another two of my favourite CTX images found at the great Mars Global Data Image Archive, calibrated and colorized:


P01_001473_1426_XN_37S169W

P02_001628_2652_XI_85N123W

smile.gif


ElkGroveDan
Those are beautiful. Good to have you back at it Bernhard.
mhoward
That second one in particular is just insane... should really be in a gallery.
Shaka
ohmy.gif ... blink.gif... biggrin.gif
machi
Dokka crater from CTX camera (NASA/JPL-Caltech/MSSS). Color is from MEX' HRSC images (ESA/DLR/FU Berlin).

Second image is again from CTX and colorised from HRSC images.
This crater is lowest place on Mars (if it is referenced to the areoid).

Color is more or less artistic impression, partly because of completely different light condition in first image (low sun (CTX) vs. high sun (HRSC)) and massive haze in second case (after all it is place with highest atmospheric pressure). Resolution is reduced to ~13 m/pix (resulting images had higher dynamic range and after adjustments much higher contrast).
Both images are part of my blog entry about lowest and highest places on Mars.
jccwrt
Here is a large CTX mosaic of Eberswalde Crater colorized using HRSC data. Please note that this isn't full CTX resolution - I needed to downsize it to 80% (~7 m/px scale) to fit the uncompressed image on Flickr.


Eberswalde Crater
wildespace

Full inline quote removed- Admin

That's an impressive lookig delta, very similar to the one in Jezero crater.
machi
QUOTE (jccwrt @ Dec 6 2018, 04:42 AM) *
Here is a large CTX mosaic of Eberswalde Crater colorized using HRSC data. Please note that this isn't full CTX resolution - I needed to downsize it to 80% (~7 m/px scale) to fit the uncompressed image on Flickr.


Great work!
BTW, there is a limit for Flickr?
I know that they changed limit for free accounts to 1000 images recently but for size I don't think that there is a limit.
I uploaded and downloaded my 2400020300 pixels map without any problems.

QUOTE (wildespace @ Jan 5 2019, 10:29 AM) *
That's an impressive lookig delta, very similar to the one in Jezero crater.


That's the reason why it was candidate landing site for both Curiosity and Mars 2020 rover.
jccwrt
QUOTE (wildespace @ Jan 5 2019, 03:29 AM) *
That's an impressive lookig delta, very similar to the one in Jezero crater.


Yep - probably the main reason it lost ground to Jezero in the 2020 selection process was the orbital detection of carbonates at Jezero. In terms of geology they're otherwise very similar.

QUOTE (machi @ Jan 12 2019, 09:23 AM) *
Great work!
BTW, there is a limit for Flickr?
I know that they changed limit for free accounts to 1000 images recently but for size I don't think that there is a limit.
I uploaded and downloaded my 2400020300 pixels map without any problems.


I'm not sure about pixel size limits, but there is a 150 or 200 mb size limit. I just made the decision to downscale rather than go with a lossy format.
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