Mars Science Lab Cameras |
Mars Science Lab Cameras |
Guest_Sunspot_* |
May 20 2004, 01:23 PM
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#1
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Guests |
Has anyone any idea what kind of imaging system is being proposed for the MSL? Would it be the same or simiilar to the MER's, or as improved as the MER pancams are to those that were used on Pathfinder?
With a nuclear power source for the rover, and hopefully the mars telecoms orbiter in place the data rate and data volume could be phenomenal |
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Nov 20 2009, 04:00 PM
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#2
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Martian Photographer Group: Members Posts: 352 Joined: 3-March 05 Member No.: 183 |
The kind of ideas here are why I think it can be done. It just remains to be shown that in 99-th percentile cases, it still works well enough to do no harm. Each adds complexity to the data stream--a color camera can generate jpegs without the rover (or camera) cpu being involved. Multiple paths (color download vs. reprocessing the colors to retrieve monochrome) add complexity. Again, something that seems easy to deal with. The software would have to include data from all parts of the pattern through a standard interpolation scheme or through some sort of multiplicative balancing (which is sensitive to small errors in assumed color). Blurring the image could help--aliasing is much worse than oversampling for stereo processing. So, having RGB-Clear and just using the clear would be bad, but using RGBG or RGBC and summing them into a lower resolution product would be fine; slightly blurring the latter would be optimal.
Ultimately, I think this is a good way to go. But I see no urgency for the path, since the value of the color is undercut by the assumption that it works partly due to the lack of color variation... But as long as it still works in cases where the color is useful, and I think it can, then this will become the path. Mastcam is paving the way for this, even with the unfortunate descopes. Others will follow. |
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Nov 20 2009, 08:44 PM
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#3
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Member Group: Members Posts: 656 Joined: 20-April 05 From: League City, Texas Member No.: 285 |
Using a Sigma FOVEON sensor, http://en.wikipedia.org/wiki/Foveon_X3_sensor, where each pixel records all colors simultaneously, would avoid the interpolation problem.
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