[X] My Assistant

[Nirgal]

On Sol 620, Spirit captured what IMO has to be one of the most scenic dust devils imaged so far: a beautifully visible dancing funnel extending high into the sky in front of the hazy Thyra Crater rim.
Beautiful b/w panoramas and anaglyphs containing this DD were already posted on the other thread.
In the following image I did a further (subtle) enhancement on the
dust devil (difference technique against the sky), vignetting correction and a
hand colorization of the R1-filter frame.

[jvandriel]

Here is my version of a 360 degree panoramic view taken on Sol 616 with the

L0 Navcam using the anti vignetting program of MichaelT and IDL Virtual Machine.

On the left are 2 Dust Devils.

As you can see the program works fine.

jvandriel

Attached thumbnail(s)

 

[Nirgal]

Here is my version of a 360 degree panoramic view taken on Sol 616 with the

L0 Navcam using the anti vignetting program of MichaelT and IDL Virtual Machine.

On the left are 2 Dust Devils.

As you can see the program works fine.

jvandriel

WOW what a superb image, jvandriel !

do you also have the full resolution version ? (so I could try a colorization of it

I too love Michael's Program for it's ease of use and great results
(BTW.: the IDL Virtual Machine installation is not too "heavyweight",
despite the 115 MB download, and I can second Tman's experience that you will not receive spam e-mail after the registration at RSI ...

It's only for special cases like the one above where I applied a
dust devil difference enhancement technique (and therefore need all the
dynamic range of the original(uncorrected image), where I still play around with
other algorithms but havn't found the perfect solution so far ...

[Nirgal]

ok, I admit I'm so fascinated by this landscape scene that I just can't stop
tweaking with the vignetting and color balance

Here is my latest attempt: less vignetting in the sky but more noise artifacts (grainy) due to the DD enhancement and coloring ...
I already tried several noise suppression filters ... but sure it would help the most if we could use the original uncompressed PDS images already ...