How Do I Learn To Process Imagery? Options

[RGMars]

Does anyone have advice for someone who wants to edit their own photos? I want to look through the archives of missions like Voyager or Viking but I don't know where to start software wise (or how to use it). My operating system is MacOs, and I don't have Photoshop. All help is appreciated...

[JohnVV]

for me i started out in the mid 1980's in photolabs and studios doing custom hand and machine film processing ( color and b&w )

then moved to Gimp in the very early days ( pre 1.0 release )

i do not run apple but i think there is a mac ISIS3 build ( or use a KVM )
i use ISIS3 for most of my workflow
---
import into isis
do the level 1 or 2 processing
export to 32 bit raw
use gmic ( it has many tools)
import back into isis


But isis3 takes a lot of TIME to learn , there is not a lot of guides other than basics

i also use Gmic and GDAL , these too have a very steep learning curve and use the Terminal - no real gui )

the free gpl tool Qgis ( uses GDAL ) will import pds img/lbl image sets
but georeferancing NON EARTH THINGS is a bit fun

image processing by TYPING things -- go figure

most of the imaging data is in PDS and in it's own format ( image.img and image.lbl )
the old data is however in pds 1 or 2 format the current is the pds3 format
this can make things FUN


there is also VICAR ( on NASA's github page) but this is rather OLD code


the first thing is to READ , then READ SOME MORE !!!

start with this site and this topic
http://www.unmannedspaceflight.com/index.php?showforum=57


there is also some good general info buried at Celestialmatters
http://forum.celestialmatters.org/index.php

i tend to include the terminal command line i used like in this
http://www.unmannedspaceflight.com/index.p...st&p=229850

or the tools like in this post
http://www.unmannedspaceflight.com/index.p...st&p=229833


now i have been doing this for YEARS i started with image inpainting and noise removal ( and jpg artifact removal) in 2001
using GREYCstoration ( now G'Mic) and a few other tools back then
even the c code used to inpaint the Verena venus images to remove glitches


so PRACTICES and ask questions