Human Cues to Improve Computer User Friendliness
Synopsis: Research in computer graphics and computer vision tries to make using computers easier. Lijun Yin wants computers to understand inputs from humans that go beyond the traditional keyboard and mouse.
Main DigestLijun Yin wants computers to understand inputs from humans that go beyond the traditional keyboard and mouse.
"Our research in computer graphics and computer vision tries to make using computers easier," says the Binghamton University computer scientist. "Can we find a more comfortable, intuitive and intelligent way to use the computer? It should feel like you're talking to a friend. This could also help disabled people use computers the way everyone else does."
Yin's team has developed ways to provide information to the computer based on where a user is looking as well as through gestures or speech. One of the basic challenges in this area is "computer vision." That is, how can a simple webcam work more like the human eye? Can camera-captured data understand a real-world object? Can this data be used to "see" the user and "understand" what the user wants to do
To some extent, that's already possible. Witness one of Yin's graduate students giving a PowerPoint presentation and using only his eyes to highlight content on various slides. When Yin demonstrated this technology for Air Force experts last year, the only hardware he brought was a webcam attached to a laptop computer.
Yin says the next step would be enabling the computer to recognize a user's emotional state. He works with a well-established set of six basic emotions "anger, disgust, fear, joy, sadness, and surprise "and is experimenting with different ways to allow the computer to distinguish among them. Is there enough data in the way the lines around the eyes change? Could focusing on the user's mouth provide sufficient clues? What happens if the user's face is only partially visible, perhaps turned to one side
"Computers only understand zeroes and ones," Yin says. "Everything is about patterns. We want to find out how to recognize each emotion using only the most important features."
He's partnering with Binghamton University psychologist Peter Gerhardstein to explore ways this work could benefit children with autism. Many people with autism have difficulty interpreting others' emotions; therapists sometimes use photographs of people to teach children how to understand when someone is happy or sad and so forth. Yin could produce not just photographs, but three-dimensional avatars that are able to display a range of emotions. Given the right pictures, Yin could even produce avatars of people from a child's family for use in this type of therapy.
Yin and Gerhardstein's previous collaboration led to the creation of a 3D facial expression database, which includes 100 subjects with 2,500 facial expression models. The database is available at no cost to the nonprofit research community and has become a worldwide test bed for those working on related projects in fields such as biomedicine, law enforcement and computer science.
Once Yin became interested in human-computer interaction, he naturally grew more excited about the possibilities for artificial intelligence.
"We want not only to create a virtual-person model, we want to understand a real person's emotions and feelings," Yin says. "We want the computer to be able to understand how you feel, too. That's hard, even harder than my other work."
Imagine if a computer could understand when people are in pain. Some may ask a doctor for help. But others "young children, for instance "cannot express themselves or are unable to speak for some reason. Yin wants to develop an algorithm that would enable a computer to determine when someone is in pain based just on a photograph.
Yin describes that health-care application and, almost in the next breath, points out that the same system that could identify pain might also be used to figure out when someone is lying. Perhaps a computer could offer insights like the ones provided by Tim Roth's character, Dr. Cal Lightman, on the television show Lie to Me. The fictional character is a psychologist with an expertise in tracking deception who often partners with law-enforcement agencies.
"This technology," Yin says, "could help us to train the computer to do facial-recognition analysis in place of experts."
Lijun Yin, associate professor of computer science and director of the Graphics and Image Computing Laboratory, joined the Binghamton University faculty in 2001. He earned a doctorate from the University of Alberta in 2000, after receiving undergraduate and master's degrees from schools in China. His research has been sponsored by the National Science Foundation, the Air Force Research Laboratory and the New York State Office of Science, Technology and Academic Research.
A related video clip is available at www.youtube.com/watchv=HUo6xo6rHNc
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Cite This Page (APA): Binghamton University. (2011, March 5). Human Cues to Improve Computer User Friendliness. Disabled World. Retrieved September 26, 2023 from www.disabled-world.com/assistivedevices/computer/friendly-interface.php
Disabled World is an independent disability community founded in 2004 to provide disability news and information to people with disabilities, seniors, their family and/or carers. See our homepage for informative reviews, exclusive stories and how-tos. You can connect with us on social media such as X.com and our Facebook page.
Disabled World provides general information only. The materials presented are never meant to substitute for qualified professional medical care, nor should they be construed as such. Funding is derived from advertisements or referral programs. Any 3rd party offering or advertising does not constitute an endorsement.