Galileo Imagery, I couldn't find a topic not specific to one moon.... Options

[JohnVV]

oops i posted the wrong link
-- i am going to have to check the README i made an make sure it is correct - gives the correct reference to the orig.
http://astrogeology.usgs.gov/Projects/Jupi...ge_SIMP0.cub.gz
http://astrogeology.usgs.gov/Projects/Jupi...ellites/io.html

the 3 band isis cub file
ran "explode" on it then exported each to tiff( gdal) and recombined R,G,B in Nip2
then in gimp cleaned the seams ( that is normal for me - i dislike seams )

the old colors of io , i think have to much green and a bit to much yellow

then AFTER i did the map i came across this
http://pirlwww.lpl.arizona.edu/~perry/io_images/c21.htm

i do need to lighten it up and add back in some of the yellow

[4th rock from th...]

Regarding image color profiles and the Web:
My personal opinion is to disable any color corrections in Photoshop and if really needed always specify sRGB for saved files.
What you should correct is your monitor or graphics board (sometimes the only option for laptops) using the sliders normally present on the control panel. These are hardware adjustments and will bet you correct display for everything.

Forcing color space correction on browser or on a program basis is always inconsistent. Here's a nice link about color profiles with interactive examples : http://www.gballard.net/psd/go_live_page_p...EGprofiles.html

[JohnVV]

well there is
AdobeRGB1998.icc
HP5000_UVDuraImageGlossMaxQ.icc
sRGB.icm
on my system and i have everything set to sRGB.icm

pick one and calibrate EVERYTHING to it
printer , monitor , photoshop, gimp, Firefox ,( IE 8 ??? ) do not about that one

[ugordan]

Perhaps this digression should be extracted into a different thread instead of contaminating this (unrelated) one?

[ugordan]

An 8-footprint, roughly natural color Galileo mosaic of crescent Jupiter, taken on September 10th, 1997:



There's also a contrast-enhanced version here for those so inclined.

[tedstryk]

Nice. I have a blog entry about that data set that I posted last year.

[tedstryk]

Here is my latest version of Galileo's E6 mosaic (with help from other orbits).

[elakdawalla]

That is lovely. Is the shift from reddish tones to more gray (or more blue) colors from mid-northern latitudes to northern polar latitudes real or a result of some boundary between image coverage?

[tedstryk]

Toward the poles, it definitely seems grayer.

[ugordan]

It's supposed to be an irradiation thing - the boundaries roughly match the latitude where magnetic field lines transition from closed (equatorial region) to open (polar) so charged particles can spiral down there and pepper the surface. Or so I've read.

[DrShank]

thats right, those are the aggregate effects of small scale deposits within the two polar caps. well documented. also very visible in the Atlas in global views and at high resolution, where it is seen as pole-facing bright deposits

Attached thumbnail(s)

 

[tedstryk]

Here is an alternate color mix.

[machi]

Little animation experiment with two Jupiter's images from Galileo.
Darkening at right side is caused by rotation of Jupiter between time
when these two images were taken.
Youtube

[Bjorn Jonsson]

Wow...

When doing these morphed animations, are you using Sqirlz Morph (that you discussed here) or the MSU Frame Rate Conversion Filter (discussed by Ian R here) or both, depending on the scene and number of frames?

I've been experimenting with the MSU stuff and it works very well for the Voyager 1 Jupiter approach movie (one exception: I need to cut away a few frames at the start of the tweened animation file to avoid 'jumps' in the cloud motion). In contrast, it does not work well for a Cassini animation of Saturn where the time between frames varies a lot and where I sometimes need to interpolate between two adjacent frames before assemling everything into one big tweened animation. I suspect in the Saturn case Sqirlz Morph is the way to go.

[machi]

Normally I'm using Sqirlz Morph, because of big differences between used images.
I think, that MSU Frame Rate Conversion Filter is usable only for small differences.
Sqirlz M. is usable nearly every time (if images contains enough corresponding details),
but it's time consuming process for every pair of input images.