Voyager Images and Isis3, applications and methods |
Voyager Images and Isis3, applications and methods |
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Member ![]() ![]() ![]() Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 ![]() |
read through and run the examples in the Workshop
https://isis.astrogeology.usgs.gov/IsisWork...hp/IsisWorkshop isis3 can be a bit daunting . First the linux requirement ( there is a mac port) the rhel 6 build runs just fine on ( i have tested ) CentOS 6.8 ScientificLinux 6.7 ( will be 6.8 soon ) Opensuse 13.2 and 42.1 -- WARNING on Fedora - has issues Then the old Voyager data Those that have been fallowing any of the reprocessing threads have seen the images missing lines and reseaus marks and it is 8 bit and searching for data can be a problem unless you are just garbing it all for this post i am using a few Blue,Green and Orange ( no red filter) ( orange and blue make red ) and using the pds atlas http://pds-imaging.jpl.nasa.gov/search/ -- WARNING!!!!!! this archive sends isis3 incompatible "img" files !!! the wget script needs to be "CORRECTED!!! for example the "atlas_wget_script" give this CODE wget -O c1113006.img 'http://pds-imaging.jpl.nasa.gov/pds/prod?q=OFSN+%3D+/data/voyager//vg_0010/extras/pds/neptune/c1113xxx//c1113006.img+AND+RT+%3D+RAW' wget -O c1113017.img 'http://pds-imaging.jpl.nasa.gov/pds/prod?q=OFSN+%3D+/data/voyager//vg_0010/extras/pds/neptune/c1113xxx//c1113017.img+AND+RT+%3D+RAW' wget -O c1113039.img 'http://pds-imaging.jpl.nasa.gov/pds/prod?q=OFSN+%3D+/data/voyager//vg_0010/extras/pds/neptune/c1113xxx//c1113039.img+AND+RT+%3D+RAW' these img files can not be opened with "voy2isis" You need the imq ( Q on the end ) a simple edit of the script will solve this --fixed-- CODE wget -O c1113006.imq 'http://pdsimage.wr.usgs.gov/archive/vg1_vg2-n-iss-2-edr-v1.0/vg_0010/neptune/c1113xxx/c1113006.imq' wget -O c1113017.imq 'http://pdsimage.wr.usgs.gov/archive/vg1_vg2-n-iss-2-edr-v1.0/vg_0010/neptune/c1113xxx/c1113017.imq' wget -O c1113039.imq 'http://pdsimage.wr.usgs.gov/archive/vg1_vg2-n-iss-2-edr-v1.0/vg_0010/neptune/c1113xxx/c1113039.imq' the voyager " *.imq " files are gziped compressed archives isis3 has BUILT IN batch support -- very handy to ingest into isis3 and also get a "preview" image i use this script CODE #!/bin/sh ls *.imq | sed s/.imq// > cube.lis voy2isis from=\$1.imq to=\$1.cub -batchlist=cube.lis spiceinit from=\$1.cub -batchlist=cube.lis voycal from=\$1.cub to=\$1.cal.cub -batchlist=cube.lis isis2std from=\$1.cal.cub to=\$1.png minpercent=0.1 maxpercent=99.9 -batchlist=cube.lis i have now a calibrated and geo-referenced image these images ![]() ![]() ![]() and they need work ( the pointing data is OFF - hay this is from Voyager after all ) ( preview of "c1113006" using isis3's "Grid " program ) ![]() i will worry about that later the spiceinit'ed and voycal images are now 2.5 Meg 32bit float images -- "c1113006.cal.cub" have a look in Qview CODE qview c1113006.cal.cub ![]() -- if you are going to use the built in isis3 tools then leave the NULL pixels and do not run stretch -- for using gimp or other tools the missing lines are "NULL" data ( px value -3.8 E^38 ) and some low instrument values that are negative pixel values -- for cleaning up and exporting the images to Gimp2.9.3 ( or Krita )these need to be zero a handy isis3 tool is "stretch " CODE stretch from=c1113006.cal.cub to=c1113006.cal1.cub null=0.0 lis=0.0 on to exporting it to a RAW image so it can be cleaned up and then moved back into isis3 best done in a new sub folder CODE cubeatt from=c1113006.cal1.cub to=c1113006.cal1.raw+BSQ+detached you now have a raw and detached headers ( rename c1113006.cal1.raw.cub to c1113006.cal1.raw ) |
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![]() Junior Member ![]() ![]() Group: Members Posts: 54 Joined: 7-July 16 From: Austin, Texas Member No.: 7991 ![]() |
I filed a feature request with ISIS to handle the Voyager IMG/LBL files - it looks like the labels in the IMQ files are fairly different from the LBL files though, so it might be a pretty involved change. It seems that no one has been using those with ISIS, as they came out in 2012 and I can't find any mention of the problem anywhere. https://isis.astrogeology.usgs.gov/fixit/issues/4345
So I'll need to switch over to using the IMQ archives (I guess you call those the EDR archives, and the newer ones the PDS archives?), which mainly differ in the way their directories are organized. Here's the program qmos with some images map-projected - it lets you visualize where the images end up. And once you have a good map you can project it back into camera space to basically take a picture of it, or pull back missing channel info to colorize an image. qmos can also show control points that are supposed to align the images together - I'm still trying to figure that part out. On a side note, working with ISIS in a Linux VM is actually pretty nice - just takes a little work to get the VM set up. It's basically like running any other program in Windows - you can Alt-Tab out of it, use the clipboard, use the files on your Windows drive, etc. I've been using Xubuntu 16.04 in VirtualBox - they only officially support Ubuntu 12.04, but so far I've been able to find the libraries to get it to work okay - there's some info here - https://isis.astrogeology.usgs.gov/fixit/issues/4330. If you want to try it, just make sure to get a 64-bit Linux and set your BIOS to allow virtualization, as ISIS is 64-bit. |
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