HiRISE DEM's |
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HiRISE DEM's |
 Feb 3 2010, 02:48 AM
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#101
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 Merciless Robot  Group: Admin Posts: 8784 Joined: 8-December 05 From: Los Angeles Member No.: 602  |
Man, oh man...watched each several times, never gets old. Thanks, Doug!
-------------------- 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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Feb 3 2010, 07:37 AM
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#102
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
Truly excellent work Doug, I've toured the Pathfinder site a dozen or so times now, thanks to you!
Now, if we can just get you and James Cameron in the same room, maybe, just maybe, the two of you can bring "Red Mars" to the big screen...! 
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Feb 3 2010, 08:30 AM
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#103
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 Senior Member Group: Members Posts: 1432 Joined: 26-July 08 Member No.: 4270 |
Very nice work!
-------------------- -- Hungry4info (Sirius_Alpha)
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Feb 3 2010, 02:17 PM
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#104
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Junior Member Group: Members Posts: 59 Joined: 18-July 07 From: London, UK Member No.: 2873 |
This was raised over in the Opportunity distant vistas thread, but I think this is probably the better home for it.
After helping Doug make the Pathfinder DEM, we were trying to figure out how well it matched up with the panorama from on the ground (suspiciously well!). So using the same method as in the other thread, here's my attempt at trying to show the distant features that show up for something about 1.5 m off the deck at Pathfinder's location. Here's a hillshade basemap of the DEM, with a colour map overlain. I had to stretch the colour to show off the subtle topography at Pathfinder, hence the cut-off at big crater. You can also see the only error in the whole DEM near the top. The red dot is Pathfinder.
And here's basically the visibility of that DEM from Pathfinder. Same colours as before - green is visible, red is not. Twin peaks and big crater show up quite nicely.
Pete |
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Feb 3 2010, 02:21 PM
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#105
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
What a fantastic and useful technique Pete! The work you guys are doing is amazing!
-------------------- If Occam had heard my theory, things would be very different now.
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Feb 3 2010, 02:29 PM
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#106
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
What was amazing was that just the very tip of North Knob was visible - and bingo, the Viewshed called it out perfectly.
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Feb 5 2010, 10:08 PM
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#107
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Member Group: Members Posts: 713 Joined: 30-March 05 Member No.: 223 |
just out of interest, here are a few quick views of the pathfinder area ("twin peaks" and the area immediately surroundig the lander) rendered using the single-image shape-from-shading (SFS) method described in the other thread ...
although the SFS based DEMs are probably far less accurate overall than the near perfectly precise official stereo/altimeter based HiRISE DEMs, it is still amazes myself how much 3D detail can be squeezed out from a single image already... |
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Feb 5 2010, 10:09 PM
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#108
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
You used the annotated one
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Feb 23 2010, 12:38 PM
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#109
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Newbie Group: Members Posts: 19 Joined: 17-June 09 Member No.: 4825 |
I'm having some problems with the DTM .IMG files from the HiRISE site. It seems like the same (or similar) problem I was having back in page 4 of this thread.
I'm using the latest version of FWTools (2.4.7) and I can open up the .IMG in OpenEV. But I can't convert it to a .jpg, .bmp, .gif, or a .png file. It just says "unable to create output file...". When I try converting it to a .jp2 or a .tif file, it appears to work, but when I open the exported file into photoshop, it's completely black in the .tif file and completely grey in the .jp2. Does anyone have any idea what's going on? Is there something I need to do to it before exporting it to another file format? |
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Feb 23 2010, 01:02 PM
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#110
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Use Bjorn's latest version of img2png - it'll turn it into a PNG for you.
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Feb 24 2010, 05:57 AM
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#111
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Newbie Group: Members Posts: 19 Joined: 17-June 09 Member No.: 4825 |
Thank you djellison, that worked.
Now to see if I can do anything interesting with them in 3dsmax
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Mar 17 2010, 08:15 PM
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#112
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 Dublin Correspondent Group: Admin Posts: 1799 Joined: 28-March 05 From: Celbridge, Ireland Member No.: 220 |
Seems like the video's are still entrancing new fans, just noticed Gizmodo picked it up via Twitter from Roger Ebert.
Edited - I just noticed Emily's comment on the Discovery article regarding the attribution of the video and corrected my own mis-attribution. Hangs head in shame. |
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Mar 17 2010, 11:19 PM
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#113
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Founder Group: Chairman Posts: 14432 Joined: 8-February 04 Member No.: 1 |
Yup - it's Adrians awesome work. Mine don't look anywhere near as good, and mine take minutes per frame, rather than 30 frames per second.
I've emailed the Gizmodo writer, commented at Discover, hopefully they'll get the message and correct it. Adrian is the one who deserves the credit for this, not me!! |
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Aug 5 2010, 09:50 PM
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#114
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Senior Member Group: Members Posts: 1074 Joined: 21-September 07 From: Québec, Canada Member No.: 3908 |
New DEMs have been posted on the HiRISE website here.
Maybe some of the imaging wizards on this forum can use them to create flyovers, oblique views... I wish I could try it myself, but I don't have the tools to do it, nor the time to learn how to do it (there's a thing called "work" that gets in the way). I know everybody here has his own occupations, so I understand that it's not possible to fully exploit all those goodies. |
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Nov 7 2010, 11:33 PM
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#115
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Junior Member Group: Members Posts: 37 Joined: 26-January 10 From: Reading, UK Member No.: 5192 |
Hi all, I've finally had enough free time to do some more animations based on the HiRISE DTMs. I hope you like them.
West Holden crater Zumba crater Dunes in Herchel crater Dune Avalanche |
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