New camera takes 3D images in complete darkness
Low intensity pulses of visible light are fired at the target, with each photon corresponding to a single pixel in the image
Tuesday 03 December 2013
A camera that can create 3D images in near total darkness has been developed by a team of researchers from the Massachusetts Institute of Technology (MIT).
The team, from MIT’s Research Laboratory of Electronics and led by Ahmed Kirmani, developed a system that builds up a three-dimensional image using single photons.
To create the image, low intensity pulses of visible light are directed at an object. The pulses are fired at a particular part of the object until a single photon is reflected back and recorded by a detector. Once the photon has been identified, the laser moves on to another part of the object. Each photon that is received corresponds to a different pixel of the image.
The 3D aspect of the image is achieved by measuring the time it to takes for the photon from the laser pulse to be reflected back, which in turn allows the camera to determine depth.
Kirmani and his team did not develop a new laser or detector. In fact, the camera technology they use is very similar to the Lidar technology employed by Google to map out its Street View service.
Instead, the MIT researchers formulated various new algorithms that allow an image to be created using around one hundredth of the photons needed for the existing Lidar technology.
Other algorithms are used to eliminate the background light that could distort the desired image.
It has been suggested that the new camera could be used to help produce images of eyes that are easily damaged by bright eyes. Alternatively, it could be used as a “spy camera”, helping military services to map out poorly lit locations.
Life & Style blogs
The great mental health betrayal: Inquiry slams ‘appalling’ unlawful detention of tens of thousands of vulnerable people
Pioneering 3D printing used to rebuild British man's face
25 years of the World Wide Web: Tim Berners-Lee explains how it all began
The Web is 25: Let's look at some baby photos of your favourite websites
Apple's iOS 7.1: How to get iPhone update, and what to do once you've got it
Katie Hopkins continues campaign to become Britain's most hated talking head with poorly timed Bob Crow tweet
No EU referendum under Labour: Ed Miliband to reveal that vote on membership is ‘unlikely’ in next Parliament if party wins power
Grace Dent: Who cares if she spells it Barraco Barner? Gemma Worrall is more employable than some bookish arts graduate
Ukraine crisis: Russia pledges to 'retaliate against sanctions' as Ukrainian president says Crimea vote will not be recognised
The quiet diplomat: Catherine Ashton - recognised and admired in all the world’s troubled countries, yet ridiculed at home
Fracking is turning the US into a bigger oil producer than Saudi Arabia
- 1 Fracking is turning the US into a bigger oil producer than Saudi Arabia
- 2 Hells of residence: Inside Macedonia's horrifying student accommodation - where the walls are green and the food is black
- 3 Boy George: Bad karma
- 4 Rachel Canning: US teenager returns home after she tried to sue her parents for child support
- 5 Rampaging elephant smashes up house but then 'saves crying baby trapped under debris'
iJobs Gadgets & Tech
£20,000 to £25,000: IT Connections Ltd: Graduate C / C++ Developer / Electroni...
£25,000 to £35,000: IT Connections Ltd: C / C++ Software Engineer / Windows / ...
£50,000 to £60,000: IT Connections Ltd: C++ / Java / Senior Software Developer...
£10 - £13 per hour: Pro-Recruitment Group: ***Temporary Purchase Ledger Clerk ...