First public release of Kaguya data |
First public release of Kaguya data |
Nov 3 2009, 09:48 PM
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#31
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Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
Awesome movie.
Now that I'm working with the normal map, I notice it's pretty rough around the poles. I'm working on smoothing it out. |
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Nov 3 2009, 11:43 PM
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#32
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Having this DEM is awesome, for the first time I'm able to get lunar renders I'm happy with. Here is a test render. The data is rendered as a DEM (not a normal or bump map) meaning it is possible to spot some slight irregularities (mountains etc.) on the limb, especially in the south. It is rendered using data from the 16 bit integer file created by mhoward and shows the Moon as it might look as seen from the Earth:
And here's another one showing the Moon from a distance of 4000 km from the Moon's center. The field of view is 35 degrees: At this close range it would be nice to have a slightly higher resolution DEM although this is not a major issue. Another one, this time 6100 km from the Moon's center, FOV 35 degrees. The "subspacecraft" point is lat=-10, lon=270 degrees west. This is probably my best one so far: Yet another one, this time from an altitude of 300 km and with a FOV of 45 degrees. This one is intended to show the limitations of the DEM, i.e. insufficient resolution for closeups like this one. It will be fun to do again in the future once the higher resolution LRO data arrives. This is a lovely dataset to play with. |
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Nov 4 2009, 01:58 AM
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#33
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Solar System Cartographer Group: Members Posts: 10158 Joined: 5-April 05 From: Canada Member No.: 227 |
Outstanding! The DEM is indeed a wonderful product. I'm a bit concerned right now with what seems to be a very limited release of TC data. As far as I can see it is indeed limited to the small areas visible in the 3DMoon global viewer, but I assume more will be added soon.
One wee problem in 3DMoon - check out the RSAT gravity data - you can plot the Clementine or topography data first, then overlay an RSAT dataset, and flick it on and off to see how it lines up with topography... but it doesn't! They have accidentally flipped it 180 degrees in longitude. I expect it will be fixed soon. Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Nov 4 2009, 02:20 AM
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#34
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Junior Member Group: Members Posts: 35 Joined: 28-September 05 From: Seattle, WA Member No.: 514 |
Now that I'm working with the normal map, I notice it's pretty rough around the poles. I'm working on smoothing it out. I processed with the 16-bit height data with the nms tool, and I get a normal map that's rougher around the poles. You must be capping the spherical correction factor to some maximum value? My normal map is almost identical to yours except within a couple degrees of the poles. It sure does seems like the polar regions need some filtering--artifacts are apparent near the poles even when slopes aren't amplified by the spherical correction factor. --Chris |
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Nov 4 2009, 02:44 AM
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#35
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
i just made a normal with my hacked copy of nms ( mine uses unsigned 16 bit)
the zip is a png image using my default settings and the default 16 bit tiff from above 5670x2880.png http://www.zshare.net/download/6793328103b3d90b/ a 1024x512.png image [attachment=19509:1k.png] |
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Nov 4 2009, 03:58 AM
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#36
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
two screen shots
the first one is the NEW one at default settings and the second is my OLD hand drawn height map [attachment=19511:moon_new.jpg] [attachment=19512:moon_old.jpg] |
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Nov 4 2009, 03:59 AM
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#37
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Solar System Cartographer Group: Members Posts: 10158 Joined: 5-April 05 From: Canada Member No.: 227 |
"probably my best so far" - yes, I'd say that deserves to be a Lunar Picture of the Day...
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Nov 4 2009, 06:26 AM
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#38
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The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Bjorn - absolutely stunning pics, thank you!
Do you take requests? I could really do with a couple of nice pics of the crater "Eddington", for obvious reasons... -------------------- |
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Nov 4 2009, 09:07 AM
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#39
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Newbie Group: Members Posts: 3 Joined: 10-June 09 Member No.: 4816 |
Bjor (and JohnVV!) amazing work! Seeing oblique Mare Crisium on the west as seen from Earth on the east! Amazing! Langrenus and Humboldt as round craters! Something you can't see from down here
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Nov 4 2009, 11:50 AM
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#40
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Outstanding work, Bjorn!
This may be the first time a computer render I've seen be so realistic - in fact with a bit of fiddling around in Photoshop (I assume you didn't do the 2.2 gamma correction judging by contrast?) you could pass it along as a photograph to unsuspecting folks. -------------------- |
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Nov 4 2009, 03:05 PM
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#41
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
It does look quite photographic ! Congratulations for all the nice renders on this thread.
-------------------- _______________________
www.astrosurf.com/nunes |
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Nov 4 2009, 04:12 PM
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#42
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Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
You must be capping the spherical correction factor to some maximum value? Yes - you are right. I think I was doing that for some reason when processing the MOLA data. (In my case it's a minimum value - apparently I've done mine differently somehow, but it's equivalent.) It sure does seem like the polar regions need some filtering--artifacts are apparent near the poles even when slopes aren't amplified by the spherical correction factor. Indeed. I've got a somewhat smoothed out version now that I'll post for people to use if they want to: LALT_normalmapV2.png (21.5MB PNG) Others may be able to do a better job filtering it; this is sufficient for my purposes. |
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Nov 4 2009, 04:21 PM
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#43
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Senior Member Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 |
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Nov 5 2009, 12:00 AM
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#44
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Outstanding work, Bjorn! This may be the first time a computer render I've seen be so realistic - in fact with a bit of fiddling around in Photoshop (I assume you didn't do the 2.2 gamma correction judging by contrast?) you could pass it along as a photograph to unsuspecting folks. Yes, these are probably the most realistic renders I have ever done. And as you suspected there's no 2.2 gamma correction - your versions are even more realistic. Bjorn - absolutely stunning pics, thank you! Do you take requests? I could really do with a couple of nice pics of the crater "Eddington", for obvious reasons... Normally not but here's a quick and dirty render with Eddington visible. The "subspacecraft" point is 22°N, 95°W, the distance from the Moon's center is 6100 km and the FOV is 35°. The subsolar longitude is 15°W. I should probably make a rotation movie of this thing... |
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Nov 5 2009, 01:43 AM
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#45
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Quick, oh yes, but dirty....? Stunning.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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