MIT 3D Scanner - 1000x Improvement?
MIT has come up with a new polarization technique that can increase the resolution of any cheap, conventional 3D-imaging device by a factor of 1,000.
By combining the information from the Kinect depth
frame in (a) with polarized photographs, MIT researchers
reconstructed the 3-D surface shown in (c). Polarization
cues can allow coarse depth sensors like Kinect to achieve
laser scan quality (b).
The researchers’ experimental setup consisted of a Microsoft Kinect — which gauges depth using reflection time — with an ordinary polarizing photographic lens placed in front of its camera. In each experiment, the researchers took three photos of an object, rotating the polarizing filter each time, and their algorithms compared the light intensities of the resulting images.
On its own, at a distance of several meters, the Kinect can resolve physical features as small as a centimeter or so across. But with the addition of the polarization information, the researchers’ system could resolve features in the range of tens of micrometers, or one-thousandth the size.
For comparison, the researchers also imaged several of their test objects with a high-precision laser scanner, which requires that the object be inserted into the scanner bed. Polarized 3D still offered the higher resolution.
A mechanically rotated polarization filter would probably be impractical in a cellphone camera, but grids of tiny polarization filters that can overlay individual pixels in a light sensor are commercially available. Capturing three pixels’ worth of light for each image pixel would reduce a cellphone camera’s resolution, but no more than the color filters that existing cameras already use.
The new paper also offers the tantalizing prospect that polarization systems could aid the development of self-driving cars. Today’s experimental self-driving cars are, in fact, highly reliable under normal illumination conditions, but their vision algorithms go haywire in rain, snow, or fog. That’s because water particles in the air scatter light in unpredictable ways, making it much harder to interpret.
In his excellent 1954 novella The Houses of Iszm, Jack Vance wrote about feeler-planes that enabled the creation of incredibly detailed 3D images in just a minute or two:
He stood rigid as feeler-planes brushed down his body. In a glass dome a three-dimensional simulacrum of himself six inches high took form.
(Read more about Jack Vance's 3D feeler-planes)
Feeler-planes were used by the Iszic to create tri-type records that were so detailed (high resolution), fingerprints were captured in three-dimensional models of the subject's hands.
Scroll down for more stories in the same category. (Story submitted 11/26/2015)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.
Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.
Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.' - Larry Niven, 1970.
Skin Electronics 3D Printed
'June's body is a tracery of lambent lines, like some arcane capillary circuitry...' - Paul Di Filippo, 1985
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Jaguar I-Pace Audible Vehicle Alert System For EVs
'Of course not a vehicle moved by means of internal explosions of a derivative of rock oil...'
Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.'
Birds Aren't Real - Wake Up, California! (With Bird Watching Guide)
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'
Self-Healing Material Pulls Carbon Out Of The Air
'... could seal the punctures.'
IRL Glasses Block Screens, Limit Vision To Real Life
'If you couldn't see the ads, how would you know what was fashionable?'
Testing The Single-Person Spacecraft
'...the lower part of the suit was simply a rigid cylinder.'
Shapeshifting Materials Transform By Light
'Its lines wavered, flowed, and then painfully reformed.'
Fully Automated Farm Iron Ox Hydroponics
'Had these machines in some incredible fashion been provided with brains?'
BrainNet Social Network Of Brains
'I used my implant to tell MILLIE what we wanted and she took care of it'
Phil Nuyttnn's City Under The Sea
'Under the lower roof there was no water, but a clear and luminous atmosphere...'
IONITY Opens First 10 Fast-Charging Stations
'Recharge the batteries... in almost every town and village...'
Superstrong Multilayer Metal-Graphene Composite Material
Negligible increase in weight increased material strength by hundreds of times.
Deepfakes Imperil Democracy (George Orwell, Right Again)
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'
String Art Courtesy Of Robot Artist
The number of different ways to span a thread between a larger number of hooks is astronomical.
Still Wondering If You'd Work For A Robot Boss?
'This is all coming to you courtesy of the simstim unit wired into your deck, of course.'
World's First Autonomous Tram In Germany
What's it like for autonomous trams when they're turned off at night?
More SF in the News Stories
More Beyond Technovelgy science news stories