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Potential new imaging technique?

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#1 FeynmanFan

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Posted 27 June 2013 - 07:00 PM

Found this in MIT Tech Briefs. My math is rusty enough that I got about 5% of this, but it intrigued me enough that I thought I'd post it here. Comments? web page Download the PDF.

#2 mark cowan

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Posted 27 June 2013 - 09:50 PM

I'd like to see more about that...

Best,
Mark

#3 derangedhermit

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Posted 27 June 2013 - 11:10 PM

You can get a feel for it without most of the math at the wikipedia page "Coded aperture" and a NASA list of the astronomical instruments using such technology. At least I think it's the same or similar thing. It's been used where you can't build a lens, like x-rays and gamma rays, and for very low S/N ratio radio environments.

Note the comment at the NASA site:
With six operational instruments, coded aperture imaging in astronomy appears to be at its culmination point. The future is with new imaging techniques such as lobster eye telescopes and multi-layered super mirrors.

"Lobster eye telescope" :grin: Roger Angel turns out to be a very creative guy.

The only visual astronomy use I can think of is you could use it to try to beat seeing for imaging, but it seems a stretch.

#4 Crayfordjon

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Posted 28 June 2013 - 12:57 AM

The human brain is not really a computer as we unterstand it, it is something more, it gives us conscious awareness; a computer has none.

#5 careysub

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Posted 30 June 2013 - 05:19 PM

This seems related to light field imaging:

https://en.wikipedia...iki/Light_field

https://graphics.sta...cts/lightfield/

#6 kw6562

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Posted 30 June 2013 - 08:52 PM

Coded aperture imaging is fascinating, IMHO. We are assisting with the construction of a coded aperture X-ray spectrometer to be used on the OSIRIS-REx asteroid sample return mission (REXIS link).
--Keith

#7 Geo.

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Posted 02 July 2013 - 08:23 AM

The human brain is not really a computer as we unterstand it, it is something more, it gives us conscious awareness; a computer has none.


Well, maybe true this week.....

#8 iluxo

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Posted 02 July 2013 - 09:32 PM

It's the theoretical basis behind how the Lytro camera works.






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