Dust Devils In Jezero Crater, single-point repository of imagery |
Dust Devils In Jezero Crater, single-point repository of imagery |
May 12 2021, 03:48 PM
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Member Group: Members Posts: 815 Joined: 3-June 04 From: Brittany, France Member No.: 79 |
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Dec 22 2021, 02:00 AM
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Member Group: Members Posts: 808 Joined: 10-October 06 From: Maynard Mass USA Member No.: 1241 |
SOL 297 -- 21 images -- 1 stance -- 1:00PM
A well-formed and slow-moving DD in all frames NOTE: Slow-moving DDs play havoc with the standard technique of averaging or median-ing all the frames to arrive at a 'normal background image' to analyze each individual frame against -- it causes the dark 'shadow' near the DD. -- I am starting to investigate another technique. -------------------- CLA CLL
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Dec 25 2021, 12:30 AM
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#3
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Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
Slow-moving DDs play havoc with the standard technique of averaging or median-ing all the frames The median is the special case of a given percentile rank per pixel, where that percentile happens to be 50. You might have better results with a different percentile, say, 25. |
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