Navigation Links
Pixels guide the way for the visually impaired

Images have been transformed into pixels and projected onto a headset to help the visually impaired in everyday tasks such as navigation, route-planning and object finding.

Developed using a video camera and mathematical algorithm, the researchers from the University of Southern California hope the pixels can provide more information and enhance the vision of patients already fitted with retinal implants.

Lead author of the paper, James Weiland, said: "Blind people with retinal implants can detect motion and large objects and have improved orientation when walking. In most cases, they can also read large letters."

"At the moment, retinal implants are still low-resolution. We believe that our algorithm will enhance retinal implants by providing the user with more information when they are looking for a specific item."

The findings have been presented today, 1 March, in IOP Publishing's Journal of Neural Engineering.

A total of 19 healthy subjects were involved in the study, who each undertook training first to get used to the pixelated vision. During the study, they were fitted with a Head Mounted Display (HMD) and took part in three different experiments: walking an obstacle course; finding objects on an otherwise empty table; and searching for a particular target in a cluttered environment.

A video camera was mounted onto the HMD which collected real-world information in the view of the subject. Mathematical algorithms converted the real-world images into pixels, which were then displayed onto the HMD's screen in front of the subject

The algorithms used intensity, saturation and edge-information from the camera's images to pick out the five most important, or salient, locations in the image. Blinking dots at the side of the display provided the subjects with additional directional cues if needed.

All three of the experiments were performed with and without cues. When subjects used the directional cues, their head movements, the time to complete the task and the number of errors were all significantly reduced.

The subjects learnt to adapt to pixelated vision in all of the tasks, suggesting that image processing algorithms can be used to provide greater confidence to patients when performing tasks, especially in a new environment.

It is possible that the device could be fitted with voice description so that the subjects are provided with cues such as "the red target is to the left".

"We are currently looking to take this a step further with object recognition, so instead of telling subjects that 'the red object is to the left', it will tell them that 'the soda can you want is to the left'," continued Weiland.

Contact: Michael Bishop
Institute of Physics

Related biology technology :

1. Japan Bioinformatics Announces the Release of their Simbiot® Time Course Analysis ‘How-To’ Guide
2. How To Get Rid of Bed Bugs Complete Extermination Guidelines Released By My Cleaning Products, Company Announces It's Also Giving Out Samples of Its Bed Bug Spray
3. BioInformatics LLC New Market Report – Best Practices Guide for Advertising to Life Scientists
4. Pictures of Bed Bugs and Non-Pesticide Product Cut Bed Bug Treatment Expenses by Half, My Cleaning Products Explains the Details in a Guide
5. New Norovirus "Vomiting Virus" Strain Spreads Like Wildfire, My Cleaning Products Publishes Green Guide to Prevent Norovirus Outbreaks in One's Home
6. How to Check for Bed Bugs in Houses, Hotels and Offices - Releases It's Official Easy-to-Follow Guide
7. Elekta and Philips Gain MD Anderson Cancer Center as Collaborator in Research Consortium on MRI-Guided Radiation Therapy
8. EU Good Distribution Practice Guidelines
9. Trade Show Display Company GLM Displays Releases New Buyer’s Guide
10. Bus Driver Blocks Bed Bug Infestation; Bed Bug Removal Guide Offers Safer Help to Solve Future Bed Bug Invasion
11. Webinar to Discuss Biosimilar Regulatory Guidelines in India and Emerging Markets
Post Your Comments:
(Date:11/25/2015)... November 25, 2015 The ... is a professional and in-depth study on the ...      (Logo: ) , ... industry including definitions, classifications, applications and industry chain ... the international markets including development trends, competitive landscape ...
(Date:11/24/2015)... , Nov. 24, 2015  Asia-Pacific (APAC) ... research organisation (CRO) market. The trend of outsourcing ... lower margins but higher volume share for the ... and scale, however, margins in the CRO industry ... (CRO) Market ( ), finds that ...
(Date:11/24/2015)... 24, 2015 Cepheid (NASDAQ: CPHD ) ... the following conference, and invited investors to participate via ...      Tuesday, December 1, 2015 at 11.00 a.m. Eastern ...      Tuesday, December 1, 2015 at 11.00 a.m. Eastern ... New York, NY      Tuesday, December 1, ...
(Date:11/24/2015)... , Nov. 24, 2015 /CNW/ - iCo Therapeutics ("iCo" ... reported financial results for the quarter ended September ... in Canadian dollars and presented under International Financial ... States ," said Andrew Rae , ... regarding iCo-008 are not only value enriching for ...
Breaking Biology Technology:
(Date:10/29/2015)... , Oct. 29, 2015 Daon, a ... that it has released a new version of its ... in North America have already ... v4.0 also includes a FIDO UAF certified server ... already preparing to activate FIDO features. These customers include ...
(Date:10/29/2015)... 29, 2015  Connected health pioneer, Joseph C. ... of technology-enabled health and wellness, and the business opportunities ... The Internet of Healthy Things . Long ... even existed, Dr. Kvedar, vice president, Connected Health, Partners ... delivery, moving care from the hospital or doctor,s office ...
(Date:10/29/2015)... 2015 Today, LifeBEAM , a ... 2XU, a global leader in technical performance sports ... with advanced bio-sensing technology. The hat will allow ... key biometrics to improve overall training performance. As ... will bring together the most advanced technology, extensive ...
Breaking Biology News(10 mins):