Juno Perijove 56, November 22, 2023 |
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: 2517 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: 411 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: 2517 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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