Social Media Sidebar

Announcement

Please sign up, comment on articles and bring your friends!

Current poll

PlanetTech is asking:

What do you think about our new web site?

Love it, indeed
Really good solution
Same as old one
The old one was better
This is a new option

Quote of the day

'By far the greatest danger of Artificial Intelligence is that people conclude too early that they understand it'

 

Eliezer Yudkowsky

Depth perception through a single lens

RATE THIS! +31
Posted in Science on 8th Aug, 2013 05:17 AM by AlexMuller

The key, they found, is to infer the angle of the light at each pixel, rather than directly measuring it (which standard image sensors and film would not be able to do).

 

The team’s solution is to take two images from the same camera position but focused at different depths. The slight differences between these two images provide enough information for a computer to mathematically create a brand-new image, as if the camera had been moved to one side.

 

By stitching these two images together into an animation, Crozier and Orth provide a way for amateur photographers and microscopists to create the impression of a stereo image without the need for expensive hardware.

 

They are calling their computational method “light-field moment imaging” — not to be confused with “light field cameras” (like the Lytro), which achieve similar effects using high-end hardware rather than computational processing.

 

Importantly, the technique offers a new and very accessible way to create 3D images of translucent materials, such as biological tissues.

 

Biologists can use a variety of tools to create 3D optical images, including light-field microscopes, which are limited in terms of spatial resolution and are not yet commercially available; confocal microscopes, which are expensive; and a computational method called “shape from focus,” which uses a stack of images focused at different depths to identify at which layer each object is most in focus.

 

That’s less sophisticated than Crozier and Orth’s new technique because it makes no allowance for overlapping materials, such as a nucleus that might be visible through a cell membrane, or a sheet of tissue that’s folded over on itself. Stereo microscopes may be the most flexible and affordable option right now, but they are still not as common in laboratories as traditional, monocular microscopes.



Read original article » Back to category

Comments

Author: Guest
Posted: 2013-08-08
+1
From what I understand, the key to this process is to infer the angle of the light at each pixel, rather than directly measuring it. Reply


 

Recent headlines

  • Posted in Science on 2017-03-31 01:12:09
    Success for SpaceX 're-usable rocket'..read more
    Posted in Software on 2017-03-30 15:54:22
    Canadian government backs a $150 million AI institute..read more
    Posted in Software on 2017-03-30 15:47:10
    Google Chases General Intelligence With New AI That Has a.....read more
    Posted in Hardware on 2017-03-30 15:39:02
    Copper oxide solar cells on top of regular silicon solar.....read more
    Posted in Hardware on 2017-03-29 09:24:33
    ExoMars: Mars Rover scientists to study Mawrth Vallis.....read more
Posted in Business on 2013-10-10 01:33
China is working towards a manned lunar mission in about.....read more
Posted in Business on 2013-10-20 07:17
Spacex says China is their main competitor for commercial.....read more
Posted in Software on 2013-10-20 06:43
Pirate Bay Browser Clocks 1,000,000 Downloads..read more
Posted in Medicine on 2013-10-10 02:10
Google reportedly investing hundreds of millions into new.....read more
Posted in Medicine on 2013-10-14 03:13
Endothelial Cells Can Repair and Regenerate Organs,.....read more
Posted in Science on 01.01.2010
Spacex says China is their main competitor for commercial.....read more
Posted in Science on 01.01.2010
Staring at Your Phone Could Be Making You Short Sighted..read more
Posted in Science on 01.01.2010
Oculus Rift virtual reality headset coming to mobile, but.....read more
Posted in Science on 01.01.2010
China is working towards a manned lunar mission in about.....read more
Posted in Science on 01.01.2010
Delivering drugs via nanoparticles to target mitochondria..read more

Recent Blog Posts

  • Posted by AlexMuller
    Intensive medical treatment can reverse type 2 diabetes..read more
    Posted by AlexMuller
    Daily consumption of tea protects the elderly from cognitive.....read more
    Posted by AlexMuller
    New analysis method of metabolites accurately predicts whether.....read more
    Posted by AlexMuller
    Unproven stem cell 'therapy' blinds three patients at Florida.....read more
    Posted by AlexMuller
    Indigenous South American group has healthiest arteries of all.....read more

Login to your Account

Login to your PlanetTech Account here

Username:
Password:
Remember me
or

Create a New Account

You just need username and password

The following errors occured:
Username:
Email:
Password:
Verify password:
Remember me