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...
Edited the topic title for clarity, and because I think this could be a worthwhile discussion. We have what I believe is the largest and most talented pool of "amateur" planetary image processing gurus in the world here at UMSF. I encourage any and all to offer your advice and tips for newcomers to the art on this thread.
The Viking lander images are in an unusual format, but fortunately there is a free viewer application that can read the image files, https://pds.nasa.gov/tools/nasa-view.shtml. A http://pds-geosciences.wustl.edu/missions/vlander/images.html is available. The Index Tables list all images in order, with brief description and meta-data. The Image Browser shows reduced size versions of all images, along with the image name such as 12A001.BB1 (the very first image from VL1). Given the image name, you can locate the same image in the corresponding lander's Index Table and then download the raw image file. Use the NASAview application to see the full-size image and convert it to JPG or GIF (preferred due to lossless encoding I believe).
You will not be able to reconstruct color images with NASAview, unfortunately. A separate tool such as Photoshop is needed. There are free tools that would do the job, probably someone else can recommend one.
Viking Orbiter image data are also available (search the web for the Planetary Data System Viking Orbiter archive) but I have not done anything with them.
From the planetary society website, what is likely an excellent introduction:
My image processing and machine vision requirements are usually so unique and weird that I almost always roll my own code but in terms of public domain packages I sometimes use are:
- GIMP (similar to Photoshop)
- ImageJ (I use it to view and analyze DEMs for example)
- Meshlab (for meshing and 3D display)
I also use the following paleo-software
- xv
- xanim
- gnuplot
- xgraph
but that's just because I'm so 8bit. CLI toolchains I regularly use are:
- ImageMagick
- netpbm
- kakadu (for JPEG2000)
- ffmpeg (for animation/video)
- sox (to convert accelerometer data to sound)
Paolo
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.php?s=&showtopic=8169&view=findpost&p=229850
or the tools like in this post
http://www.unmannedspaceflight.com/index.php?s=&showtopic=8169&view=findpost&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
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