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Oppy's Moving Again! |
 Jun 30 2005, 08:18 AM
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#101
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 Member  Group: Members Posts: 236 Joined: 21-June 05 Member No.: 417  |
Oppy has finished her investigations at Purgatory Dune, and is about to head... NORTH! (and then east or west
  Latest update from Steve Squyres: http://athena.cornell.edu/news/mubss/ |
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Aug 3 2005, 02:23 AM
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#102
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Member Group: Members Posts: 350 Joined: 20-June 04 From: Portland, Oregon, U.S.A. Member No.: 86 |
The TIFF format has been around for a long time, whereas PNG is a newcomer.. TIFF also allows you to specify just about everything anyone could ever possibly care about image-wise, whereas PNG deliberately concentrates on the 'basic' image data. Look at the specs for TIFF sometime, you'll see what I mean.
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Aug 3 2005, 04:27 AM
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#103
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Member Group: Members Posts: 477 Joined: 2-March 05 Member No.: 180 |
QUOTE (mike @ Aug 2 2005, 09:23 PM) The TIFF format has been around for a long time, whereas PNG is a newcomer.. TIFF also allows you to specify just about everything anyone could ever possibly care about image-wise, whereas PNG deliberately concentrates on the 'basic' image data. Look at the specs for TIFF sometime, you'll see what I mean.  But does NASA actually use any of that extra stuff? All I can find extra in one image I downloaded from their catalog is the kind of compression used (LZW) and what I assume is the program used to compress the file - VICAR Program VTIFF. I suppose extra info embedded in a file could be useful though. |
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Aug 3 2005, 09:57 PM
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#104
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Member Group: Members Posts: 350 Joined: 20-June 04 From: Portland, Oregon, U.S.A. Member No.: 86 |
QUOTE (Jeff7 @ Aug 2 2005, 08:27 PM) But does NASA actually use any of that extra stuff? All I can find extra in one image I downloaded from their catalog is the kind of compression used (LZW) and what I assume is the program used to compress the file - VICAR Program VTIFF. I suppose extra info embedded in a file could be useful though. From what I recall, TIFF was created long long ago, when there was wide disparity between how images were represented in various mainframes (and maybe even minicomputers!), and there simply was no unified graphics file format, so they threw everything they could think of into the spec so that nobody would be left out. It's a pretty crazy format - it seemed overly complex when I looked at it way back when, but maybe it would make more sense to me now. Regardless, it's been around so long that it's still 'the' image format to use when you want platform independence. GIF and PNG (and BMP) have always been rather PC-centric. |
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general Oppy's Moving Again! Jun 30 2005, 08:18 AM
Sunspot Changeing lanes:
http://qt.exploratorium.edu/mars... Jul 22 2005, 08:48 AM edstrick While the view of Victoris from the rim will be fa... Jul 22 2005, 09:13 AM
Marcel I hope for the same. There's one "but... Jul 22 2005, 09:24 AM edstrick There's one "but": we don't *kno... Jul 22 2005, 09:37 AM general I hope I'm wrong, but the 'etched terrain... Jul 22 2005, 09:47 AM Nirgal QUOTE While the view of Victoris from the rim will... Jul 22 2005, 10:31 AM Sunspot Where abouts is Opportunity on that map now that t... Jul 22 2005, 09:56 AM general The red dot in the upper right hand corner Jul 22 2005, 10:01 AM Sunspot hmmm...are you sure? I would have thought they wo... Jul 22 2005, 10:04 AM edstrick "I hope I'm wrong, but the 'etched te... Jul 22 2005, 10:23 AM sapodilla QUOTE (edstrick @ Jul 22 2005, 12:23 PM)... Jul 22 2005, 12:46 PM general No, not sure... It's only a general indication... Jul 22 2005, 10:46 AM Bill Harris QUOTE It does look rough, but remember the images ... Jul 22 2005, 12:33 PM Burmese That horizon still looks fairly rugged. My guess ... Jul 22 2005, 01:05 PM Phil Stooke The red dot is about where they got stuck. Opport... Jul 22 2005, 02:14 PM jvandriel A 360 degree panoramic view taken by Opportunity w... Jul 22 2005, 07:25 PM Phil Stooke ...and the previous post (thanks!) reprojected... Jul 22 2005, 08:07 PM RNeuhaus QUOTE (Phil Stooke @ Jul 22 2005, 03:07 PM)..... Jul 22 2005, 08:33 PM Sunspot Anyone else think the dunes look as though they ar... Jul 22 2005, 10:29 PM CosmicRocker QUOTE (Sunspot @ Jul 22 2005, 04:29 PM)Anyone... Jul 23 2005, 05:05 AM dilo Not sure if anyone already posted and, for shure, ... Jul 24 2005, 09:07 PM dilo And in the next Sol, they made a "chicane... Jul 24 2005, 09:16 PM Nirgal QUOTE (dilo @ Jul 24 2005, 11:16 PM)And in th... Jul 24 2005, 10:21 PM CosmicRocker QUOTE (dilo @ Jul 24 2005, 03:07 PM)Not sure ... Jul 25 2005, 04:24 AM Jeff7 QUOTE (CosmicRocker @ Jul 24 2005, 11:24 PM)Y... Jul 26 2005, 01:01 AM CosmicRocker QUOTE (Jeff7 @ Jul 25 2005, 07:01 PM)Irfanvie... Jul 26 2005, 04:41 AM Jeff7 QUOTE (CosmicRocker @ Jul 25 2005, 11:41 PM)T... Aug 2 2005, 09:44 PM tacitus QUOTE (dilo @ Jul 24 2005, 03:07 PM)Not sure ... Jul 26 2005, 03:30 AM RNeuhaus QUOTE (Sunspot @ Jul 22 2005, 05:29 PM)Anyone... Jul 24 2005, 10:44 PM Phil Stooke Rodolpho, I did this in Photoshop. The vertical s... Jul 23 2005, 12:59 AM Bill Harris Sunspot, I have been thinking the same thing: the ... Jul 23 2005, 04:35 AM Bill Harris QUOTE Its Advanced options include a 256 color (8b... Jul 26 2005, 02:10 AM mike Technically, an 8-bit image can be in color - PNGs... Jul 26 2005, 05:14 PM clt510 QUOTE (mike @ Jul 26 2005, 12:14 PM)PNGs have... Jul 26 2005, 05:56 PM MERHope QUOTE (mike @ Jul 26 2005, 05:14 PM)PNGs have... Jul 27 2005, 08:53 AM mike QUOTE (MERHope @ Jul 27 2005, 12:53 AM)GIFs r... Jul 27 2005, 05:15 PM mike That's good to hear. I guess GIF is dead by n... Jul 26 2005, 07:06 PM Nix On a side note, Opportunity's deck looks quite... Jul 27 2005, 06:03 AM djellison Well - a 500 -> 650w hike is substantial Jul 27 2005, 06:47 AM edstrick Gifs are reasonably okay for uncompressed 8-bit bl... Jul 27 2005, 09:10 AM maycm Just a polite suggestion guys but this discussion ... Jul 27 2005, 06:45 PM Sunspot SOL 536 drive:
http://marsrovers.jpl.nasa.gov/gal... Jul 28 2005, 01:03 PM Nirgal very good to see her moving slowly but steadily an... Jul 31 2005, 08:47 PM dilo wrong thread... Jul 31 2005, 11:25 PM dilo Did someone noticed this crater near horizon?
I d... Jul 31 2005, 11:48 PM alan Thats off to the east. I remember seeing it in the... Aug 1 2005, 02:23 AM dot.dk That's because the Erebus map is turned upside... Aug 1 2005, 02:38 AM Decepticon I hope we visit R2 than D2 first. Aug 1 2005, 02:43 AM Phil Stooke yes, Dilo, I think you are probably right about th... Aug 1 2005, 03:46 AM Burmese So much for staying in the trenches:
http://marsr... Aug 2 2005, 01:22 PM mhoward Experimenting here... Click on the image for the l... Aug 3 2005, 12:23 AM Airbag Looks like you (well, your MMB!) is blending t... Aug 3 2005, 01:18 AM mhoward Airbag: It's a secret. Shhhh! (Scroll down... Aug 3 2005, 02:34 AM |
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