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 Institute’s 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 paper’s first author, and a student of electronic engineering from the University of York in England who is currently working on his Master’s degree in Peli’s 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.
Patti Jacobs | EurekAlert!
Arguments, Emotions, and News distribution in social media - Leibniz-WissenschaftsCampus Tübingen
04.05.2018 | Leibniz-Institut für Wissensmedien
High Number of Science Enthusiasts in Switzerland
05.02.2018 | Universität Zürich
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
22.05.2018 | Life Sciences
22.05.2018 | Earth Sciences
22.05.2018 | Trade Fair News