Jim Bell Q'n'a, Questions Please |
Jim Bell Q'n'a, Questions Please |
Jan 22 2006, 11:06 PM
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#1
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Jim Bell's agreed to do a brief Q'n'A in a few days time, so similar to the one I did for Steve, I want your questions! Try and keep it quite 'current' if you can, as we're going to make this more a 'news' outlet than a look back type chat.
We're going to try, if this one works, to do these every couple of weeks or so, a bit of Rover news and a bit of Q'n'A each time, but we'll see how this one goes first! Fire away people If they're all crap, don't worry, I've got LOADS in mind. Doug |
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Jan 23 2006, 06:08 AM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
Question for Jim Bell:
The usual left cam 3-channel multispectal imaging is bands 2,5,7 <near-IR,green,violet> Sometimes we have other color combos like 2,5,6 or 2,4,7 or 3,5,7 (or some such.. I'd have to go back and check examples). All of the alternate sequences seem to produce images with degraded color discrimination: two of the channels are too similar to each other, and you typically get images that are dominated by long-vs-short wavelength differences and the color differences due to the middle channel (reflecting curvature in the spectrum) are less discriminated. What's the rationale behind some of these other filter sequences during only 3 filter color imaging? Oh.. regarding HomePlate... it's obviously the fossilized pizza-crust of the gods. Heaven help us if Spirit finds 1 meter fossilized pepperoni, ...or anchovies! |
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Feb 14 2006, 10:09 PM
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#3
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Founder Group: Chairman Posts: 14434 Joined: 8-February 04 Member No.: 1 |
Question for Jim Bell: The usual left cam 3-channel multispectal imaging is bands 2,5,7 <near-IR,green,violet> Sometimes we have other color combos like 2,5,6 or 2,4,7 or 3,5,7 (or some such.. I'd have to go back and check examples). All of the alternate sequences seem to produce images with degraded color discrimination: two of the channels are too similar to each other, and you typically get images that are dominated by long-vs-short wavelength differences and the color differences due to the middle channel (reflecting curvature in the spectrum) are less discriminated. What's the rationale behind some of these other filter sequences during only 3 filter color imaging? Oh.. regarding HomePlate... it's obviously the fossilized pizza-crust of the gods. Heaven help us if Spirit finds 1 meter fossilized pepperoni, ...or anchovies! This one got done, as did the one regarding aging Doug |
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