[X] My Assistant

[Jeff7]

Sorry, I used bitmap because it preserve colors better than jpeg, forgot not all people can easily visualize it!

PNG then, or maybe a ZIPped BMP. Either format is lossless. I like Irfanview with PNG-out to really compress the heck out of PNG files. PNG-Out does a lot of passes, and can take several minutes for a large (1000x1000 or larger) image, and that's assuming at least a 2GHz CPU.

[dvandorn]

"Rock pile" is right!

Yep -- it's a rubble pile, all right. That much seems incredibly obvious. It's good to see that such things can, at least some of the time, be so visually apparent that all we'll really need is a good, close look at an object to tell if it's definitely a rubble pile.

It's also pretty obvious that there are two big, potato-shaped rubble piles in this complex, attached via a partially-buied, irregularly-shaped rubble pile. Some (but not all) of the major depressions in this assemblage are filled with fines deep enough to cover larger rocks and boulders, while more fine material provides inter-boulder surfacing within the obvious rubble piles.

I would have to think that the three visible major rubble piles were already rubble piles before this particular assemblage came together. So, as I've said, I'm pretty certain that the current Itokawa is the accretion of three rubble piles. The fines probably accumulated where they are fairly shortly (in planetary development terms) after the most recent accretion event, and the whole thing is in equilibrium -- until something else whacks it or subjects it to strong tidal stresses.

-the other Doug

[odave]

until something else whacks it or subjects it to strong tidal stresses.

Deep Impact II, anyone?

[malgar]

I've applied a shape from shading algorithm to a part of lastest Itokawa images. Unfortunately my prog is very poor and simple. It produces a lot of noise and I must delete it with an heavy low pass filter. I search collaboration to improve it..
Anyway.. these are the images. I hope to make something better in the next days.

Attached thumbnail(s)

 

[Phil Stooke]

The other thing revealed on that website is the locations of the two sampling events. They are near the equator, not at the poles, which surprises me a bit. One is in "Muses Sea" near the middle of one long side (smooth material). The other is in "Woomera" at one end (a bit rougher, and spectrally different). This much I gleaned from the Japanese page - it will be nice when the English text is availble as well.

Phil

[tedstryk]

Great find Toma-B!

Does anyone else find the language mix a bit odd on the site?
(In other words, the page is in Japanese but the figures are labeled in English)

[malgar]

Why don't you try babelfish?

http://babelfish.altavista.com/babelfish/t..._hayabusa.shtml

[tedstryk]

Why don't you try babelfish?

http://babelfish.altavista.com/babelfish/t..._hayabusa.shtml

I have....I was just commenting on how it is odd that a lot of the labels were in English on a Japanese language site.

[Phil Stooke]

Hmmm... I would never have thought of babelfish. Marine fauna are a mystery to me, Ford, old chap. But you were right, it did help.

I just wasted a few hours playing with the images, trying to fit them together into a global mosaic. Lots of fun, but not very useful, and anyway I couldn't post it as it's their data, not mine. Similarly I have compared the radar model (high resolution version, from their website, not the low res version more commonly seen). This has never been possible before - a good model and good images of the same object. It's interesting. The model was fairly good, within the limitations of the method. But again, it can't be published on the web.

Phil

[GBTO]

Since I don't know how to read Japanese properly, my interpretation can be wrong, but from what I can glean from the Chinese characters...

AMICA/Visible light camera - 1500 images (1GB)
Near infrared spectromenter - 75,000 spectra
Laser altimeter - 1.4 million altimetric measurements
X-ray spectrometer - 700 hours of measurements

Figure 9 Model A is the gravity field scale and 10 has to do with the slope of the surface on Itotawa, with respect to sampling sites.

The article did mention the use of optical navigation with the target marker - one would imagine there will be images taken with the nav-cam.

Hope this is helpful!

[Comga]

The other thing revealed on that website is the locations of the two sampling events.  They are near the equator, not at the poles, which surprises me a bit.  One is in "Muses Sea" near the middle of one long side (smooth material).  The other is in "Woomera" at one end (a bit rougher, and spectrally different).  This much I gleaned from the Japanese page - it will be nice when the English text is availble as well.

Phil

They can sample near the equator because the speed is only ~4cm/sec. They need to stay in sunlight and in contact with the Earth.

There are very illuminating comments by someone who seems to be a JAXA team member in

http://uplink.space.com/showflat.php?Cat=&...&fpart=all&vc=1

[dilo]

English release!
http://babelfish.altavista.com/babelfish/t...05%2f1102.shtml

[Harry]

I was waiting for this move, Harry! 
When observed as a stereogram, this didn't convinced me (it seems that the program simply disriminated between flat and corrugated surfaces).
However, anaglyph is impressive:

Wooh, amazing! Thank you!

[Harry]

Here is a wiggle-animation between the two images you posted:
[attachment=2088:attachment]

It looks like your program has the effect of shifting pixels to the side more if they are close to the average of nearby pixels, and leaving them fixed if they are far from the average.  This makes, for instance, the smooth dark patch in the upper lobe shift a lot (very close) while nearby rocks with a hard shadow/sunlight transition stay fixed (farther away).

It definately is an interesting effect, and while it doesn't necessarily produce correct depth results, its cool that you get even this good of a result with a purely image-processing approach.

Woo, nice! It's as if living...

[Harry]

Stereoscopic ITOKAWA (view: parallel/crossed eyes) synthesized by Stereographer.

For the stereograph for the large image of ITOKAWA, visit here.

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