need help. how to uncompress .img files from magellan

need help. how to uncompress .img files from magellan

ncc1701d View Member Profile	Jan 6 2011, 11:33 PM Post #1
Junior Member Group: Members Posts: 91 Joined: 21-August 06 Member No.: 1063	Hoping someone can help. I am trying to uncompress the FMAP .img files which are part of magellans images of venus so I can use a converter program to convert them from sinusodal to cylindrical mapping. Things I do know is that I can just rename .img to .raw and open in photosho however the converter program newmap.exe which is an old dos program that is provided with the FMAP images requires I think the uncompressed .img files in order to convert sinusodal to cylindrical. I know the .raw didnt work. And I get error saying my .img files are compressed so it wont work. I know .img files are not cd or dvd image file or so I think becuase I could not open them in MagicISO If they were CD images I would think MagicISO would work but I may be wrong though. Anyone familiar with what I am trying to do. Any image processing guys out their do this with the magellan FMAPS? I figure the experts would be here. thanks

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JohnVV View Member Profile	Jan 7 2011, 07:16 AM Post #2
Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489	if you want it is cylindrical you could grab them from PDS map a planet and they will BE in that format if you choose it http://www.mapaplanet.org/explorer/venus.html http://pdsmaps.wr.usgs.gov/PDS/public/expl...l/gredrintm.htm http://pdsmaps.wr.usgs.gov/PDS/public/expl...ml/gtdrintm.htm there is a size restriction and it might take 24 hours for a 2 gig image to have a ink mailed to you. but when i made the map for celestia i used the data listed on the pds geosciences page http://pds-geosciences.wustl.edu/missions/.../gxdr/index.htm the gredr http://pds-geosciences.wustl.edu/geo/mgn-v.../mg_3002/gredr/ mixed with the data from gedr http://pds-geosciences.wustl.edu/geo/mgn-v...1/mg_3002/gedr/ and the topo map http://pds-geosciences.wustl.edu/geo/mgn-v...1/mg_3002/gtdr/ mixed with some of http://pds-geosciences.wustl.edu/geo/mgn-v...1/mg_3002/gsdr/ then a BUNCH of "inpainting" but you are using Microsoft ???? hhhmmmm might be fun i used ISIS3 on linux but the north and south are in polar stereo projection and Gimp can remap that to cylinder so can the old AND STILL GOOD tool MMPS http://www.users.globalnet.co.uk/~arcus/mmps/ i do not know if there is a prebuilt windows I DO know it dose build on windows xp using MinGW - i did that a few years back

Posts in this topic

ncc1701d need help. how to uncompress .img files from magellan Jan 6 2011, 11:33 PM

djellison URL to the files in question? Jan 6 2011, 11:39 PM

Phil Stooke .img files are not compressed, they are basically ... Jan 6 2011, 11:44 PM

ncc1701d here is the link ftp://pdsimage2.wr.usgs.gov/cdrom... Jan 7 2011, 12:42 AM

elakdawalla I can't remember if the FMAPs are stored the s... Jan 7 2011, 12:31 AM

siravan IMG files usually have either a text header or a s... Jan 7 2011, 12:46 AM

ncc1701d concerning the other post i just noticed. I used ... Jan 7 2011, 12:49 AM

siravan Here is the first image (reduced to 25% of its ori... Jan 7 2011, 01:10 AM

ncc1701d I appreciate all the input here so thank you all. ... Jan 7 2011, 01:37 AM

siravan I recompiled newmap for XP using the source code c... Jan 7 2011, 02:34 AM

ncc1701d for some reason I get my same message *** ERROR *... Jan 7 2011, 03:00 AM

siravan This is the file I got: I'm not sure about ... Jan 7 2011, 03:13 AM

ncc1701d I have to think on this now. Its not what I expect... Jan 7 2011, 03:24 AM

siravan This is the correct image (I made a mistake in rea... Jan 7 2011, 03:58 AM

ncc1701d are you just typing newmap fl73n003.img fl73n003... Jan 7 2011, 06:36 AM

ncc1701d thanks siravan I got it to work. My problem was th... Jan 7 2011, 08:31 AM

JohnVV if you want it is cylindrical you could grab them ... Jan 7 2011, 07:16 AM

ncc1701d JohnVV I used to use pdsmaps and it was very helpf... Jan 7 2011, 08:43 AM

elakdawalla QUOTE (ncc1701d @ Jan 7 2011, 12:43 AM) m... Jan 7 2011, 05:03 PM

ncc1701d ok here is little more clarification about what bu... Jan 7 2011, 08:54 PM

JohnVV some of it still works http://www.mapaplanet.org/e... Jan 7 2011, 10:27 AM

Phil Stooke I agree, I use Map-a-Planet all the time and reall... Jan 7 2011, 08:44 PM

elakdawalla OK, I see your problem. The "Center of Proje... Jan 7 2011, 09:08 PM

ncc1701d Thank you. I found it. Just out of curiosity did y... Jan 7 2011, 11:54 PM

JohnVV early on i liked pds-map-a-planet for the simple ... Jan 8 2011, 12:27 AM

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