MARCI Images, ISIS pointers/advice/help much appreciated and desired! |
MARCI Images, ISIS pointers/advice/help much appreciated and desired! |
Aug 18 2010, 07:51 PM
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#1
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Member Group: Members Posts: 293 Joined: 29-August 06 From: Columbia, MD Member No.: 1083 |
As part of my research, I'm starting to learn ISIS and display MARCI imagery. I've quickly learned that MARCI imagery is pretty hard to work with since it's a push-frame camera, which a few people claim is the reason there's a relative lack of papers published using its data. I tried to run through the process for an entire pole-to-pole MARCI swath and after processing cam2map for nearly 48hrs, the Linux box booted me off. That's on 8GB of RAM, BTW. After that, I started cropping the images to much smaller chunks. Below is my first recognizably Martian image that I've been able to produce (I've only been at this for a few days). This is from the southern mid-latitude highlands. Some things I don't understand...why is the left part of the frame somewhat washed out/bright? The red/yellow bands around the edge are areas where there apparently is no data in the green or blue channels...not sure why. My processing steps are:
marci2isis spiceinit marcical crop cam2map automos I need to figure out how to really speed this up. I want to look at complete MARCI global mosaics over at least 1 martian year if not the entire MRO mission. At this rate, that would take years . Apparently an ISIS update is coming out in the near future which will help work with LROC WAC images. LROC WAC is also pushframe, so maybe that will help with MARCI imagery as well? Thanks in advance! |
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Oct 5 2021, 03:32 PM
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#2
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Member Group: Members Posts: 306 Joined: 4-October 14 Member No.: 7273 |
I rendered out a new video this weekend! This one overflies eastern Hellas, Tyrrhena Terra, Syrtis Major, and the Nili Fossae regions. As a bonus it flies over Jezero the day after Perseverance's landing.
https://youtu.be/PjwY9S0uEQc By the way, if anyone else is interested in processing MARCI images I have a shell script for use with ISIS3 that helps speed things up significantly. https://github.com/AsterAphelion/marci-parallel |
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Oct 6 2021, 07:21 AM
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#3
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Senior Member Group: Members Posts: 1089 Joined: 19-February 05 From: Close to Meudon Observatory in France Member No.: 172 |
I rendered out a new video this weekend! This one overflies eastern Hellas, Tyrrhena Terra, Syrtis Major, and the Nili Fossae regions. As a bonus it flies over Jezero the day after Perseverance's landing. By the way, if anyone else is interested in processing MARCI images I have a shell script for use with ISIS3 that helps speed things up significantly. What a nice video ! Thanks so much Jccwrt |
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