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MARCI Images, ISIS pointers/advice/help much appreciated and desired!
Drkskywxlt
post Aug 18 2010, 07:51 PM
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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 laugh.gif . 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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Drkskywxlt
post Aug 24 2010, 02:44 PM
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Using a MARCI swath from a later orbit (6124), I made this image of Lunae Planum. The dark albedo terrain seems to be closer to "true color" in this image vice the ones I posted last week with the blue tinge. I didn't change anything, so perhaps the MARCI team just got better with the color matching as time went along?
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- Drkskywxlt   MARCI Images   Aug 18 2010, 07:51 PM
- - djellison   I feel your pain - I tried the exact same process ...   Aug 18 2010, 08:20 PM
- - Drkskywxlt   After several more failures, I've got another ...   Aug 20 2010, 04:28 PM
- - stevesliva   What requires all those cores? You were talking R...   Aug 20 2010, 04:52 PM
|- - Drkskywxlt   QUOTE (stevesliva @ Aug 20 2010, 11:52 AM...   Aug 20 2010, 05:08 PM
|- - stevesliva   QUOTE (Drkskywxlt @ Aug 20 2010, 01:08 PM...   Aug 20 2010, 06:38 PM
|- - Drkskywxlt   QUOTE (stevesliva @ Aug 20 2010, 01:38 PM...   Aug 20 2010, 07:01 PM
- - Drkskywxlt   One more on the other side of the south pole.   Aug 20 2010, 05:10 PM
- - Drkskywxlt   The large crater in these two images is Schiaparel...   Aug 20 2010, 08:25 PM
- - elakdawalla   It seems the blue channel really brightens to both...   Aug 20 2010, 08:42 PM
|- - Drkskywxlt   QUOTE (elakdawalla @ Aug 20 2010, 03:42 P...   Aug 20 2010, 09:00 PM
|- - mwolff   QUOTE (elakdawalla @ Aug 20 2010, 02:42 P...   Aug 21 2010, 01:33 AM
- - volcanopele   Could it be due to scattered light in the optics o...   Aug 20 2010, 09:15 PM
- - djellison   Rememebr the FOV of MARCI is HUGE. The edges you...   Aug 20 2010, 11:13 PM
|- - ugordan   Yup, probably a combination of Rayleigh scattering...   Aug 20 2010, 11:45 PM
|- - mwolff   QUOTE (djellison @ Aug 20 2010, 05:13 PM)...   Aug 21 2010, 01:40 AM
- - Drkskywxlt   Using a MARCI swath from a later orbit (6124), I m...   Aug 24 2010, 02:44 PM
- - Drkskywxlt   I never posted some of the other (slightly more in...   Jul 27 2012, 05:43 PM
- - Drkskywxlt   . .   Jul 27 2012, 05:45 PM
- - mhoward   Very nice. First one in that pair shows Tempe Terr...   Jul 27 2012, 05:52 PM
- - Drkskywxlt   Yes, I split a larger image into two pieces. Comb...   Jul 27 2012, 06:19 PM


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