It's June - Better LOLA? |
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It's June - Better LOLA? |
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#61
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![]() Member ![]() ![]() ![]() Group: Members Posts: 399 Joined: 28-August 07 From: San Francisco Member No.: 3511 ![]() |
Here's a little something... LOLA_diagnostic_illumination_whole_11K.jpg (11520x5760 pixel JPG image; 27MB) Well worth the wait! Thanks! -------------------- 'She drove until the wheels fell off...'
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#62
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Member ![]() ![]() ![]() Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 ![]() |
lighting from 45 deg up ( the basic "emboss" filter ) is the best way to view 16 bit height data
it was the only way i could find to easily show it soon i am going to have to update my normal map what did you use to destrip it |
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#63
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10194 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
Fantastic image! Thanks. This is going to be a fantastic dataset.
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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#64
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 ![]() |
what did you use to destrip it I'm not positive what you mean by destrip, but if you mean removing the vertical banding artifacts, that's why I went back to the source, the RDRs - to generate the map using a modified kriging technique with some different parameters. The image above is the resulting surface normal map Also - and for me this is the "neato" part - I'm generating the surface normal map directly from the RDRs, which gives a more precise result than generating it from the gridded height map. I was pleased - and more than a little surprised - to see how precisely the resulting surface normal map matches up with the Clementine version 2 base map, in most areas. Computationally expensive to do - and took quite a long time to work out - but worth it. |
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#65
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 ![]() |
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#66
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10194 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
"I was pleased - and more than a little surprised - to see how precisely the resulting surface normal map matches up with the Clementine version 2 base map, in most areas."
And remember that it's the Clementine map that is wrong if there's a difference. Clementine control, based on a patchwork quilt of thousands of images, will be greatly inferior to this dataset. LOLA is going to be our ultimate lunar control system. 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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#67
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 ![]() |
And remember that it's the Clementine map that is wrong if there's a difference. Yes, I've kind of discovered that the hard way ![]() |
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#68
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 ![]() |
For fun, here is the illumination map from above generated from LOLA data, combined with the Clementine map. So basically: the Clementine map with the lighting synthetically shifted to the right to bring out the topography more. The image comes in
LOLA + Clementine lunar map - Preview Size (5760x2880 pixel JPG; 8.9MB) LOLA + Clementine lunar map - Large (11520x5760 pixel JPG; 30.8MB) LOLA + Clementine lunar map - Extra Large (23040x11520 pixel JPG; 92.5MB) |
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#69
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Member ![]() ![]() ![]() Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 ![]() |
QUOTE but if you mean removing the vertical banding artifacts that is what i meant . the processing of the rdr data the gdr is very banded QUOTE And remember that it's the Clementine map that is wrong if there's a difference i found that out with the kaguya data .Kaguya lines up well with LOLA. But most of the Clementine map is "predictably " off .An over all warp brings most of it into alignment. However some small areas are just off by what looks like a random amount ( +- 5 to 20 pixels ) |
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#70
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Moderator Posts: 3431 Joined: 11-August 04 From: USA Member No.: 98 ![]() |
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#71
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Member ![]() ![]() ![]() Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 ![]() |
no kidding it is a big file
the *.dat's alone would be a bit much then rdr2csv and filter that to the required data I was looking in to doing that but the overall drive space required is more than i could do |
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