Reprocessing Historical Images, Looking for REALLY big challenges? |
Reprocessing Historical Images, Looking for REALLY big challenges? |
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Member ![]() ![]() ![]() Group: Members Posts: 123 Joined: 21-February 05 Member No.: 175 ![]() |
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#2
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Solar System Cartographer ![]() ![]() ![]() ![]() Group: Members Posts: 10192 Joined: 5-April 05 From: Canada Member No.: 227 ![]() |
I didn't do the geometric correction!
The original mosaics were assembled by hand and re-photographed. Two sets were made - at USGS and JPL. At USGS the mosaics were assembled on the insides of hemispherical bowls about 1 m diameter, one of which is still preserved in a display at Flagstaff (Surveyor 7, a sunset view that I have never seen published, with shadows falling across the 'playa' area north of the lander). At JPL they did the same, but separately and possibly (I'm not sure) on larger bowls. The USGS ones were photographed in small sections at high resolution. The JPL ones were photographed using an ingenious geometry that produced rectangular prints - ten of which can be fitted together to make a cylindrical 360 degree panorama. So the geometric correction was done that way, a true physical projection. I recently scanned the pan sections and I am now painstakingly removing the hideous seams and tonal variations. The results look good for Surveyors 1 and 7 but a bit bland for Surveyors 3 and 5 - I have not done 6 yet, but it will be bland too. 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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#3
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 2488 Joined: 17-April 05 From: Glasgow, Scotland, UK Member No.: 239 ![]() |
The Surveyor hemispherical panorama domes (there *must* be a proper name for the things!) were featured in, as I recall, a 1966 or 1967 issue of National Geographic - one of the 'How The US Will Conquer Our Nearest Neghbor' sort of articles which they did quite regularly.
-------------------- Remember: Time Flies like the wind - but Fruit Flies like bananas!
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