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Juno Perijove 43, July 5, 2022
Bill Harris
post Sep 25 2022, 03:41 PM
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That is exactly what I was referring to when I discussed the appearance of relief in pairs of Juno images. Any two images of a point taken along a flight path create a stereo pair, and can be viewed in stereo.


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mcaplinger
post Sep 25 2022, 05:16 PM
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QUOTE (Bill Harris @ Sep 25 2022, 08:41 AM) *
Any [two] images of a point taken along a flight path create a stereo pair, and [can] be viewed in stereo.

Sure, subject to the caveats that every Junocam "image" is a sequence of framelets taken at slightly different times from slightly different locations, the clouds themselves are moving dynamically, and the orientation of epipolar lines is complex and variable across the FOV. See Gerald's slides for a taste of all the complexities involved and all the work left to do.

I'm don't think it's happening here, but I've seen lots of "stereo" images where there was some factor that wasn't considered, and people were just deluding themselves into seeing relief.


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Bill Harris
post Sep 26 2022, 09:08 AM
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It may well be that these Junocam images are giving the impression of stereo relief, but in reality we are not looking a 2D surface. There has to be high clouds grading down to low clouds.

--Bill


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Floyd
post Sep 26 2022, 09:45 PM
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I think mcaplinger may have been referring to shape from shade, not Gerald's work.


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mcaplinger
post Sep 26 2022, 10:39 PM
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QUOTE (Floyd @ Sep 26 2022, 01:45 PM) *
I think mcaplinger may have been referring to shape from shade, not Gerald's work.

No, but I don't know what Bill was talking about. Sure, one would expect some relief from clouds, and sure, stereo could see that in theory.

Don't even get me started about shape from shading. smile.gif


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john_s
post Dec 23 2022, 03:27 PM
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Looks like no-one has posted this lovely JIRAM image yet, so here it is for completeness. It would be great to have IDs for the various volcanoes- in particular, what's the extended feature right on the limb at 10:30 o'clock?

Attached Image


Release here.
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volcanopele
post Dec 23 2022, 04:00 PM
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Attached Image


Merged that image with a Voyager/Galileo basemap. The extended hotspot at 10:30 is Loki on the limb

I should also post some of my PJ41 products here as well…


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john_s
post Dec 23 2022, 04:16 PM
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I knew you'd have the answer, VP! Thanks. Makes sense that it's Loki- not many volcanoes would have the power to glow so brightly at that emission angle.

John
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