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Rosetta PDS, Images and other products made from archived data
machi
post Dec 14 2015, 10:48 PM
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As we have now access to archived OSIRIS images and data from other instruments, I think that it's good idea to start up special topic for that.
Here are few results from the newly published data:
Hi-Res crosseye stereo color image of Imhotep regio at resolution 0.5 m/pix.



Anaglyph version:



Global color image at 2.2 m/pix:



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fredk
post Dec 15 2015, 12:14 AM
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Very nice anaglyph.

I guess we can't say too much about the colour given that the hue is pretty much uncorrelated with the topography and looks mostly like noise:
Attached Image
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machi
post Dec 15 2015, 01:01 AM
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Thanks!

There is real color difference between neck area (Hapi and Seth regio) and head and body.
Neck is more bluish.
But global image is from uncalibrated data and global color differences are very subtle.
Beyond that are source images clearly affected by lossy compression and this had major impact on quality of images (in this case).
Losslessly compressed images had better quality and noise looks in them differently (as periodic stripes).
This isn't problem for unenhanced images but only objects which have distinctly different color without enhancing are water ice boulders.
Those are visible mostly on higher resolution images (there is whole icy boulder field in the crosseye/anaglyph stereo image).


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elakdawalla
post Dec 15 2015, 06:01 AM
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I made a set of data browsing pages, with WAC and NAC images grouped together and color-coded by filter.
http://planetary.s3.amazonaws.com/data/ros...osiris_fat.html
http://planetary.s3.amazonaws.com/data/ros...osiris_cat.html
http://planetary.s3.amazonaws.com/data/ros.../osiris_gm.html

Enjoy!


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jccwrt
post Dec 15 2015, 08:17 AM
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I assembled a 4 frame green filter mosaic of the Imhotep region taken on September 5, 2014 from an altitude of 40km. It's got a great view of the sublimation features, and the velvety texture of the smooth area near the terminator is great.




I also tried my hand at making a color image. Might be a little on the pink/magenta side, but trying to adjust those made the shadowed areas too green/cyan, so the final result's a compromise between the two extremes.

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jasedm
post Dec 15 2015, 01:07 PM
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QUOTE (machi @ Dec 14 2015, 10:48 PM) *
As we have now access to archived OSIRIS images.....


Does this mean Holger Sierks is back on our Stu's Christmas card list??

wink.gif wink.gif
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Herobrine
post Dec 16 2015, 12:03 AM
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I took the 30 frames from W20140910T035912757ID30F18.IMG through W20140910T042812710ID30F18.IMG and made a full HD bounce animation of the slow rotation. A tiny preview version is included below.

(Click for 1920x1080)
Attached Image

It's hugenormous (65 MB), so beware; it may take a while to fully load, but it's one of the est things I've seen from Rosetta.
The images were processed to show the area of the neck and connected regions that are in shadow. The frames were all captured 1 minute apart by the wide-angle camera, but are being played at ~15 frames per second.
The 1920x1080 dimensions were achieved by cropping the original 2048x2048 frames, not scaling, so this is still at the native/original resolution.
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elakdawalla
post Dec 16 2015, 12:09 AM
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That is AMAZING.


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Bill Harris
post Dec 16 2015, 12:34 AM
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QUOTE
back on our Stu's Christmas card list??
Or, apropos, lumps of coal.


QUOTE
I took the 30 frames... and made a full HD bounce animation
It's just like being there. I don't have the MIPS to do that, but I've worked up smallish animations with Navcam imagery to try to intuit the locations of some of the jets we've seen over the year.

--Bill


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chuck0
post Dec 16 2015, 01:59 AM
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That jet animation looks really nice! I always love how light bounces off of one of the lobes and illuminates the dark side of the other one... you dont get something like that with convex objects like most of the stuff buzzing around out there.

Also i gave that slomoVideo tool a quick try and applied it to six consecutive NAC frames (taken with different filters... but still relatively usable since the color differences are so small)

https://drive.google.com/file/d/0B_Y5O4C6ai...iew?usp=sharing

works best if played in a loop wink.gif
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jccwrt
post Dec 16 2015, 02:31 AM
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Herobrine, that bounce animation is gorgeous.

A three frame color mosaic of the Imhotep region. Hue in this image comes primarily from differing exposure lengths for each filtered image, I've only made minor adjustments to contrast because the shadows were a little on the green side. There might be a hint of color differences in this, as the center of the smooth region is slightly bluer than its surroundings.

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Herobrine
post Dec 16 2015, 02:40 AM
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Noticed this little guy at the bottom of the animation I posted earlier.

(Click for animation)
Attached Image

This is rotated 90 degrees counter-clockwise from the original.
A rock (I suppose) can be seen moving top-right to bottom-left. The star field is seen moving downward. Each frame was captured 60 seconds apart.
It's headed back toward(ish) 67P in image space (it can be hard to tell since I have it bouncing). I wonder how long it has been 'airborne' here.
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DoF
post Dec 16 2015, 04:12 AM
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I can only second the opinions of the rest, that's an amazing animation Herobrine!

jccwrt: Isn't that mosaic flipped horizontally?
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jccwrt
post Dec 16 2015, 04:35 AM
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Now that you mention it, it is. I have a hard time keeping track of which way is when working with FITS data...

I'll post a fixed version in the morning, I just noticed I missed a few smuts as well.
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akuo
post Dec 16 2015, 02:51 PM
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QUOTE (Herobrine @ Dec 16 2015, 12:03 AM) *
(Click for 1920x1080)
Attached Image

It's hugenormous (65 MB), so beware; ...

Use the following link with gifv animation automatically generated by imgur for faster loads. It uses a bit more up-to-date animation format:
http://i.imgur.com/IJnKFMz.gifv

Thanks for the animation Herobrine!


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