HiRISE DEM's |
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HiRISE DEM's |
 Apr 13 2008, 10:46 AM
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#1
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Administrator  Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1  |
Late last week I stumbled upon a few HiRISE derived DEM's (Randy Kirk works his magic once again!)
http://webgis.wr.usgs.gov/ftphirise/index.jsp (URL now down) I'm working on both Vic Crater and the Columbia Hills. Fortunately, now I've got a Mac, I can use ISIS. I've figured out a fairly simple flow ( isis2raw as 16 bit unsigned, and then imported into Photoshop ) to take DEM CUB's and make 16 bit PNG's  Just to demo how important that is for me as an animator - sliced comparisons of 8bit vs 16 bit. A busy week unfortunately, but animations of various sorts are in the pipeline.
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Apr 13 2008, 10:15 PM
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 IMG to PNG GOD Group: Moderator Posts: 907 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
QUOTE (djellison @ Apr 13 2008, 10:46 AM)  Just to demo how important that is for me as an animator - sliced comparisons of 8bit vs 16 bit. In general, I find 8 bit DEMs almost useless. They can sometimes be used by converting them to 16 bits and smoothing them - I almost never use them without fairly extensive processing. |
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Apr 14 2008, 10:41 AM
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#3
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
Still figuring out the best way to explore and display these dems - especially the Colubia Hills.
Meanwhile - a revisit of an idea I had some years ago using a MOC dem. This is the 'power goodness' display - lit from the north in green, the south in red. A wider angle, and a close angle.
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Apr 15 2008, 07:33 AM
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#4
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
And using the Victoria one to simulate shadowing with the sun high in the sky, and as low in the sky as it gets ( 63ish degrees )
http://www.planetary.org/blog/article/00001395/ D |
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Apr 20 2008, 07:30 PM
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#5
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
I've had a hard time trying to do justice to these data sets, the Columbia Hills and the Victoria Crater HiRISE Dem's.
Here's my effort for the Columbia Hills http://www.unmannedspaceflight.com/doug_im...bia_dem_480.mov (4.8 meg) Victoria Crater (with added 'rover') tomorrow |
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Apr 21 2008, 09:04 AM
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#6
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
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Apr 21 2008, 01:07 PM
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 The Poet Dude Group: Moderator Posts: 3845 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
 Cooler than a penguin sat on an iceberg, sucking an ice lolly and wearing underpants full of ice. 
-------------------- |
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Apr 21 2008, 05:27 PM
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 Member Group: Members Posts: 652 Joined: 23-October 04 From: Reston, Virginia USA Member No.: 103 |
Agree, very very cool!
All that's needed to make us happy is to tack onto the end of the movie a little video of Oppy SAFELY driving out of VC!! -------------------- Jonathan Ward
Collecting space stuff since 1963 at http://jonathan-spacejunk.blogspot.com |
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May 5 2008, 01:14 PM
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#9
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
I rendered a jumbo 4kx4k fisheye then polar-to-rectangled it back into this.
It's hard to get the rover wheels to sit on the terrain when the terrain doesn't actually appear until you render it
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May 15 2008, 11:24 AM
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#10
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
I hope you all enjoyed the movies at full res courtesy of Emily on TPS's Blog
I'm open to requests etc. My favorite thing to play with is lighting, this is a particularly nice shot, although it does bring out the trouble with the CCD's.
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May 19 2008, 04:12 PM
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#11
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
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May 19 2008, 04:20 PM
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The Poet Dude Group: Moderator Posts: 3845 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Well done! About time your work on these DEMs was recognised properly.
-------------------- |
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May 19 2008, 04:50 PM
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 Special Cookie Group: Members Posts: 2113 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
Magnifique!
-------------------- BEYOND THE CRADLE blog
"Ride, boldly ride," The shade replied, "If you seek for Eldorado!" Edgar Alan Poe |
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May 19 2008, 05:05 PM
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#14
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 Senior Member Group: Members Posts: 4766 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Bra-VO!!!
Superbly rendered...and appropriately recognized at last!!!-------------------- Yet as we leave, as we continue the often humbling maturation process of learning, it is wise to remember that we also have much to unlearn.
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May 19 2008, 05:09 PM
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#15
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Administrator Group: Admin Posts: 11548 Joined: 8-February 04 Member No.: 1 |
Just for fun, I actually have a better version on the burner right now
Clouds, sun, haze etc. Results over the next few days.
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