Cloud hunting between flybys, more distant views |
Cloud hunting between flybys, more distant views |
Feb 19 2009, 01:59 PM
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#1
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
The latest shots of Mezzoramia and environs are nice:
http://saturn.jpl.nasa.gov/multimedia/imag...7/N00131391.jpg I'm not sure if that's a cloud streak on the left. |
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May 1 2009, 07:19 PM
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#2
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Solar System Cartographer Group: Members Posts: 10186 Joined: 5-April 05 From: Canada Member No.: 227 |
Mike, I'm not varying gamma or whatever directly. My images of this type are usually - and this one certainly was - made by processing the image in several ways and combining them. I might take the image and make several copies of it. I do two different high pass fllters and contrast stretches on two of them, and patch the edge artifacts from non-high-passed images. I brighten the terminator on a couple of them, by different amounts and with different selection feathering settings. I darken the brightest areas with different settings, enhancements and feather settings. Then I merge them. Artifacts in one processing version are cancelled out by good bits in another.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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