Navigation Links
Technique enhances digital television viewing for visually-impaired
Date:1/15/2008

Boston, MAScientists at Schepens Eye Research Institute have found that people with low vision can improve their ability to see and enjoy television with a new technique that allows them to enhance the contrast of images of people and objects of interest on their digital televisions. A study in the edition of the Journal of the Optical Society of America published online in November 2007 and issued in print in January 2008, demonstrates that patients with macular degeneration prefer watching TV with this contrast enhancement and that the level of enhancement they choose depends on how much vision they have lost with their disease.

Nearly four million Americans suffer from vision loss from diseases--such as macular degeneration--that impede their central vision and their ability to comfortably view the images on any television, cutting them off from a significant source of information and entertainment enjoyed by the mainstream. Often such patients cannot see faces of characters or other details that make a broadcast understandable. Some solutions have been special telescopic glasses, which can help patients see details but often cut off parts of the image, lessening context, and large television screens, which can be quite costly.

The new method--developed by Dr. Eli Peli, the Institutes low vision expert, the Moakley Scholar in Aging Eye Research, and a professor of ophthalmology at Harvard Medical School, is the latest of several image-enhancing innovations his research team has created to improve TV watching for the visually impaired. It is also the first developed for digital television images. We knew it was time to address the changing technology, says Peli, who pointed out that digital television will replace traditional television technology over the next few years due to government mandate.

Working within the decoder that makes digital television images possible, Peli and his colleagues were able to make a simple change that could give every digital TV the contrast enhancing potential for the benefit of the visually impaired. The same modification could easily be made to new HDTVs, and digital cable set top boxes, says Matthew Fullerton, the papers first author, and a student of electronic engineering from the University of York in England who is currently working on his Masters degree in Pelis lab.

To test their new technology, the team presented eight digital videos to 24 subjects with vision impairment and six with normal vision. Each patient was given a remote control, which allowed him/her to increase or decrease the contrast of the image. Patients manipulated over-enhanced and blurry images for the greatest clarity.

The research team learned that even subjects with normal sight selected some enhancement and that the amount of enhancement selected by those with visual problems varied depending upon the level of contrast sensitivity loss they experienced due to their disease. All this demonstrated to the team that the device was both usable and useful to the subjects, even those without vision problems.

Peli is now working with Analog Devices Inc. to create a prototype chip that could be included in all future generations of digital television. The technology we created is quite simple and can easily and cheaply be incorporated into even the newest technologies for television and internet video.

Peli adds that he believes that as the population ages, this technology will be used by more and more of those whose eyes are going through a normal change as they get older as well as those more severely impaired.


'/>"/>

Contact: Patti Jacobs
pjacobs12@comcast.net
617-868-0077
Schepens Eye Research Institute
Source:Eurekalert

Related medicine news :

1. Eye-staining technique offers early detection for dry eye syndrome
2. New technique detects specific chromosomal damage, may indicate lung cancer risk
3. The Pharma & Life Sciences Best Practice Database: an Industry Resource for Successful Techniques and Performance Benchmarks for Reaching the Top
4. Latest DES Analysis Stresses Importance of Physicians Well-Trained in Implantation Technique and Patient Follow-Up
5. Accuray Receives FDA Clearance for New Dose Calculation Technique for Body Radiosurgery
6. Radiation therapy technique reduces length of prostate cancer treatment
7. Radiation therapy technique reduces length of prostate cancer treatment
8. IVF technique enables pregnancy without multiple births, Stanford researchers find
9. UT Southwestern investigating hypothermic technique in treating pediatric head injuries
10. UCLA doctor develops new technique to treat varicose veins
11. New technique improves purity of medicines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/31/2016)... ... May 31, 2016 , ... Fire Door Solutions, ... joined the Fire Door Solutions’ team. Keith will serve Fire Door Solutions ... in-field re-labeling. He will be instrumental in developing educational curriculum and leading ...
(Date:5/31/2016)... ... 31, 2016 , ... More than 80 representatives of the Hepatitis B ... Cancer Foundation held an event on National Hepatitis Testing Day outside of Philadelphia City ... the leading cause of liver cancer. , Foundation leaders and the citywide coalition they ...
(Date:5/31/2016)... TEXAS (PRWEB) , ... May 31, 2016 , ... ... live in Greater Houston Healthconnect’s (Healthconnect) regional health information exchange, which enables physicians ... medical records for their patients from other participating organizations in the exchange. SJMC’s ...
(Date:5/31/2016)... ... May 31, 2016 , ... When ... he knew it was something that contractors should have at their disposal on ... gets,” says Butch, CertainTeed’s Director of Contractor Programs. , As a result, ...
(Date:5/31/2016)... ... May 31, 2016 , ... Spartan Bioscience today introduced ... portability and convenience. , The Cube is exceptionally small—it takes up the space ... fits easily into any space, whether in a hospital, doctor’s office, or pharmacy. ...
Breaking Medicine News(10 mins):
(Date:5/31/2016)... According to a new market ... by Type (Human, Animal Pathology), by End User (Pharmaceutical ... - Global Forecasts to 2021", published by MarketsandMarkets, studies ... of 2016 to 2021. This market is expected to ... Million in 2016, at a CAGR of 12.1%. ...
(Date:5/31/2016)... May 31, 2016 Aloe vera ... food, cosmetics and pharmaceuticals, with global volume to surpass ... 1.6 Bn. Demand for aloe vera extracts ... yogurts will continue its upward momentum in 2016 as ... boost positive sentiment on aloe vera, with wide-ranging applications ...
(Date:5/31/2016)... , May 31, 2016 ... World Health Assembly zur Eliminierung von viraler Hepatitis ... Mitgliedsstaaten eine historische Verpflichtung eingegangen, virale Hepatitis bis ... . World Health Assembly haben sich die ... bzgl. viraler Hepatitis (Global Viral Hepatitis Strategy) zu ...
Breaking Medicine Technology: