My Assistant
Juno Perijove 56, November 22, 2023 |
Nov 29 2023, 09:24 PM
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#1
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2559 Joined: 13-September 05 Member No.: 497 |
Some of the images have been posted on missionjuno.
You will immediately notice that there is something weird about them. Yes, we know about this, and I'll say more about it when I can. In the meantime, anything people can do to process them would be appreciated. I've had some success using https://github.com/chunglabmit/pystripe -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Dec 18 2023, 06:11 PM
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#2
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Member ![]() ![]() ![]() Group: Members Posts: 432 Joined: 18-September 17 Member No.: 8250 |
My current thought is that when taking images that are not "cadence constrained" (eg just Jupiter, not Io) would be to acquire "HDR" image sequences. Take a normal exposure image, followed as quickly as possible by a 3x or 4x longer exposure, and possibly followed by a 3rd even longer exposure. The idea being that the longer exposures will move the signal up out of the noise. And "exposure fusion" post processing could be used to recover useful imagery from the darker areas currently dominated by noise.
WRT companding. Probably want to eventually shift table (so bterm0 is about ~320 larger?), so lower ~100 companded values aren't going utilized. |
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Dec 18 2023, 11:51 PM
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#3
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2559 Joined: 13-September 05 Member No.: 497 |
WRT companding. Probably want to eventually shift table (so bterm0 is about ~320 larger?), so lower ~100 companded values aren't going utilized. The bterms are only 8 bits, unfortunately. We did not anticipate this particular problem. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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mcaplinger Juno Perijove 56 Nov 29 2023, 09:24 PM
Kevin Gill QUOTE (mcaplinger @ Nov 29 2023, 05:24 PM... Nov 29 2023, 09:35 PM
Antdoghalo The camera color really took a beating with this e... Nov 30 2023, 02:16 AM
mcaplinger From https://www.missionjuno.swri.edu/junocam/proc... Nov 30 2023, 08:29 PM
stevesliva QUOTE (mcaplinger @ Nov 30 2023, 03:29 PM... Nov 30 2023, 09:34 PM
mcaplinger QUOTE (stevesliva @ Nov 30 2023, 01:34 PM... Nov 30 2023, 09:54 PM
Explorer1 Interesting that it's such a major change in o... Nov 30 2023, 09:08 PM
volcanopele QUOTE (Explorer1 @ Nov 30 2023, 02:08 PM)... Nov 30 2023, 10:41 PM
Antdoghalo As much as I'd like to see perhaps a social me... Dec 1 2023, 07:42 PM
mcaplinger QUOTE (Antdoghalo @ Dec 1 2023, 11:42 AM)... Dec 1 2023, 08:22 PM
Gerald QUOTE (mcaplinger @ Dec 1 2023, 10:22 PM)... Dec 2 2023, 06:12 AM
mcaplinger QUOTE (Gerald @ Dec 1 2023, 10:12 PM) The... Dec 2 2023, 03:17 PM
mcaplinger The approach images have been posted so one can wa... Dec 1 2023, 08:05 PM
Kevin Gill Single GRS frame from the approach movie.
Dec 1 2023, 08:42 PM
Kevin Gill And all the RGB frames from the approach movie. Th... Dec 1 2023, 08:47 PM
Gerald Some of my early thoughts about the striping artef... Dec 2 2023, 02:39 AM
stevesliva Mostly in response to Gerald.
I'm afield of m... Dec 3 2023, 01:01 AM
mcaplinger QUOTE (stevesliva @ Dec 2 2023, 05:01 PM)... Dec 3 2023, 01:36 AM
Brian Swift Posted following at https://www.missionjuno.swri.e... Dec 4 2023, 07:37 AM
mcaplinger QUOTE (Brian Swift @ Dec 3 2023, 11:37 PM... Dec 4 2023, 03:50 PM
Brian Swift QUOTE (mcaplinger @ Dec 4 2023, 07:50 AM)... Dec 5 2023, 04:47 AM
mcaplinger QUOTE (Brian Swift @ Dec 4 2023, 08:47 PM... Dec 5 2023, 05:16 AM
Bjorn Jonsson Destriping the images seems to be trivial. I'v... Dec 4 2023, 08:42 PM
mcaplinger QUOTE (Bjorn Jonsson @ Dec 4 2023, 12:42 ... Dec 4 2023, 09:15 PM
siravan Is there any possibility of changing the exposure ... Dec 5 2023, 03:29 AM
mcaplinger QUOTE (siravan @ Dec 4 2023, 07:29 PM) Is... Dec 5 2023, 03:38 AM
Brian Swift QUOTE (mcaplinger @ Dec 4 2023, 07:38 PM)... Dec 5 2023, 07:10 AM
mcaplinger QUOTE (Brian Swift @ Dec 4 2023, 11:10 PM... Dec 5 2023, 03:19 PM
Bjorn Jonsson I have been making nice progress with the PJ56 ima... Dec 10 2023, 01:24 AM
mcaplinger QUOTE (Bjorn Jonsson @ Dec 9 2023, 05:24 ... Dec 16 2023, 05:47 PM
Brian Swift QUOTE (mcaplinger @ Dec 16 2023, 09:47 AM... Dec 17 2023, 05:22 PM
mcaplinger QUOTE (Brian Swift @ Dec 17 2023, 09:22 A... Dec 17 2023, 06:10 PM
Bjorn Jonsson Image PJ56_132:
The left image is an approximat... Dec 15 2023, 11:45 PM
StargazeInWonder Beautiful images, despite the upstream glitches. I... Dec 17 2023, 05:41 AM
Bjorn Jonsson The PJ56 images are good enough that I wouldn... Dec 18 2023, 01:28 AM
mcaplinger QUOTE (Bjorn Jonsson @ Dec 17 2023, 05:28... Dec 18 2023, 02:32 AM
StargazeInWonder It's a somewhat unknowable unknown, but the in... Dec 18 2023, 04:47 AM
volcanopele Yeah, Io's spectrum has a significant break ar... Dec 18 2023, 03:50 PM
StargazeInWonder I just took Bjorn's approximately true color p... Dec 19 2023, 02:54 AM
volcanopele tried that out with one of the PJ55 images and it ... Dec 20 2023, 05:10 PM
Bjorn Jonsson Creating synthetic images using a linear combinati... Dec 23 2023, 12:29 AM![]() ![]() |
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