Glasgow scientists create single-pixel camera for 3D images

[geoff carver]

This is the kind of thing which reinforces my belief that digital 3D
"photography" is the way of the future, and laserscanning is going to prove
to be a dead end:
http://www.bbc.co.uk/news/uk-scotland-22556172

[Geoff Avern]

Yeah, but it doesn't work outdoors, where the archaeology is (unless you
like to work at night).

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[geoff carver]

Not yet...
Although I have made 3D models by stitching a pile of photos together...

[Geoff Avern]

My (whisky'd) opinion (it is rather late here on a Friday night) is that
this "new thang" won't/can't replace laser scanning. It just won't work if
there's sunshine around! Besides, there are other technologies which are
already well on the way to replacing (in part!) laser scanning ... as Geoff
suggests, Structure from Motion (the new take on photogrammetry) is the
obvious contender, and Boeing's labs have had a single photon camera around
for a few years which is certainly interesting, but any technique using
structured light can't compete with daylight. It just ain't no use to use
out of doors!

Of course, when someone finally wakes up to the fact that they should be
using structured IR radiation, that's a different story. Sh*t, I damn-well
should have patented that one before blurbing it out to all and sundry.

Cheers all. Goodnight. Sweet dreams. Avagoodweekend.
Geoff Avern

----- Original Message -----
From: "geoff carver" <gjca...@t-online.de>
To: <anti...@googlegroups.com>
Sent: Friday, May 17, 2013 9:58 PM
Subject: RE: [Antiquist] Glasgow scientists create single-pixel camera for
3D images

[Nina]

According to the article the single pixel camera uses IR, they say it ranges from 300 nm to 2 micrometers.

I'd go for hyperspectral scanning to combine geometric and wide spectral data for more info. Here is a recent development

http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-7-7119

There are a lot of imaging systems, active and passive, which work only in short distances, so they are fine if you work with objects. It is much more challenging to develop systems that can be used in longer distances & physical environments where you have to remove atmospheric effects. So I bet that we will see both active and passive sensors around in the future as well.