Voyager Images and Isis3, applications and methods |
Voyager Images and Isis3, applications and methods |
Jun 5 2016, 07:41 PM
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#1
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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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Sep 3 2017, 06:40 PM
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#2
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Member Group: Members Posts: 890 Joined: 18-November 08 Member No.: 4489 |
for bulk processing isis3 has a built in set of basic tools, as in using a list
or for more complex things you can use the bash shell and the full set of terminal tools and codding - including loops and if's the main issues i have had is with the reseau( or however one spells that) points ( rmrex) you also might want to run "voycal" on them -- also Voy2( i think it is 2 , need to double check on that ) data has a bit of extra noise and there is a tool for those images voy2isis for the IMQ data voycal for all of it voyramp for the needed voy2 data |
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