Pathfinder Sol 80 |
Pathfinder Sol 80 |
Feb 12 2005, 05:37 PM
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Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
This is a little pan I put together from the last "end-of-day" image Pathfinder returned of Sojourner on Sol 80. Sol 81 would be the last day for which Sojourner would return images. Sol 76 saw the last data return form the forward looking cameras. The color data was stolen from other sols. Sol 83 would be the last day any data would be returned, and Sol 92 would be the last day any contact would be made. The remaining images on Sols 81-83 were of the windsocks.
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Guest_alex_k_* |
Dec 16 2014, 08:38 AM
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Guests |
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Dec 16 2014, 10:37 AM
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Member Group: Members Posts: 378 Joined: 21-April 05 From: Portugal Member No.: 347 |
Alex_k, most of what I see on that image is just small scale noise generated by processing.
You are processing the image at a higher resolution than the original. So any "details" that become apparent but are below the original pixel size are just noise. I'd recommend using a low pass filter on the end result to remove them. Anyway, you can more or less trace the petal outlines by small changes on the noise pattern. Makes sense because even if covered in dust, they are still smother that the surrounding soil. -------------------- _______________________
www.astrosurf.com/nunes |
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Guest_alex_k_* |
Dec 16 2014, 11:33 AM
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Alex_k, most of what I see on that image is just small scale noise generated by processing. Details of the lander become distinguishable, don't they? QUOTE You are processing the image at a higher resolution than the original. So any "details" that become apparent but are below the original pixel size are just noise. Actually not a correct conclusion. Because neighbour pixels can also contain information, especially if a camera had a little disfocus. So it's possible to extract information from them - to acceptably approximate the "pixeled" image. QUOTE I'd recommend using a low pass filter on the end result to remove them. If to use a low-pass filter before processing we'll lose details. You're right that there're some artifacts in the resulted image. They can be avoided by using a low-pass filter after processing. |
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