Development of Mobile Phones for the Hearing Impaired
The convenience and comparatively lower cost of cell telephones in the States has made them an essential part of life.
Unless, naturally, you are one of the 37 million or so hearing-impaired adults living in this country. But School of Washington ( U.W. ) in Seattle analysts hope to change that by developing software letting callers communicate on their mobile telephones using sign language through real time video rather than being restricted to text messaging. The goal: a hearing-impaired person will be in a position to make or answer calls using video streaming hearing impaired phones over the cellular network to exchange sign language messages. Interpretation: most US cell telephone networks lack the bandwidth to handle streaming video. Electric engineering professor Eve Riskin and her associates are targeting info compression, the key to permitting video to flow across a slower network and display on less robust mobile telephones.
Riskin asserts the group’s MobileASL ( for American Sign Language ) software encodes video info virtually 2x as much as was formerly possible compacting this info, “so that it takes up less space and gums up the network less.”. The researchers may be able to achieve a high level of compression thru what they call “skin mapping” algorithms that will investigate pixel color to distinguish an individual’s face and hands in an image.
“To save battery life, reduce the quantity of packets sent over the network, and increase the quality per sign language,” claims Jaehong Chon, a U.W.
Graduate student collaborating in the project, “we have developed ROI encoding based totally on a skin map and frame dropping if a user isn’t signing.”. Riskin and her associates developed MobileASL with a $460,000-plus grant from the nation’s Science Foundation (NSF) to make algorithms for achieving better quality video at lower bandwidths. “We questioned if we could do this on a cell phone,” she asserts.
The analysts released a Web video on YouTube demonstrating MobileASL phones connecting through a Wi-Fi network, because current cellular networks are unable to support streaming video.
The researchers have been testing their MobileASL software on 2 HTC ( high tech computers ) Co. TyTN II telephones since February. The phones available through ATT in the States but much more ordinarily employed in Europe cost $900 each and has the video camera positioned on the same side as the video screen, which permits callers to communicate in sign language while observing the reactions of the person on the other end of the line. MobileASL, which runs on mobile telephones that use Microsoft’s Windows Mobile operating system, can instantly detect when a caller is using sign language and increase the rate at which it sends and receives information over the network. (When no-one is signing and the majority of pictures picked up by the electronic camera are inanimate, the software slows the bit rate to preserve battery power.). It is feasible to hold a MobileASL telephone in one hand and sign with the other, but the easiest way to use the telephone is by putting it on a leveled surface to stop movements that might degrade quality. “You desire as little motion as practical because motion is affecting the quantity of time it takes to process the data and needs more bandwidth,” claims Carrie Heeter, a Michigan State School professor of telecommunication, info studies and media. Heeter was part of the college’s research team that in 1996 launched the ASL browser, an internet site that offers thousands of videos that interpret words into ASL signs.