One possible future in the therapy of children with cognitive and motor-skill disabilities could involve the popular Finnish game "Angry Birds" - and a robot.
Georgia Institute of Technology recently paired a small humanoid robot with an Android tablet and then asked kids to teach the robot how to play the game, dragging their finger on the tablet to whiz the bird across the screen.
The robot watches what happens and records "snapshots" in its memory. It notices where fingers start and stop, and how the objects on the screen move according to each other, while constantly keeping an eye on the score to check for signs of success.
When it's the robot's turn, it mimics the child's movements and plays the game. If the bird is a dud and doesn't cause any damage, the robot shakes its head in disappointment. If the building topples and points increase, the eyes light up and the machine celebrates with a happy sound and dance.
It's simplified AI, but to kids it is a whole lot more.
"The robot is able to learn by watching because it knows how interaction with a tablet app is supposed to work," said Georgia Tech's Ayanna Howard, Motorola Foundation Professor in the School of Electrical and Computer Engineering who is leading the project. "It recognizes that a person touched here and ended there, then deciphers the information that is important and relevant to its progress."
The robot analyzes the new information and provides appropriate social responses while changing its play strategy.
"One way to get robots more quickly into society is to design them to be flexible for end users," said Hae Won Park, Howard's postdoctoral fellow working closely on the project. "If a robot is only trained to perform a specific set of tasks and not able to learn and adapt to its owner or surroundings, its usefulness can become extremely limited."
Hae Won Park, a postdoctoral fellow in the School of Electrical and Computing Engineering, teaches a robot how to play Angry Birds. Credit: Georgia Tech
That flexibility is one reason Howard and Park see their robot-smart tablet system as a future rehabilitation tool for children with cognitive and motor-skill disabilities. A clinician could program the robot to cater to a child's needs, such as turn taking or hand-eye coordination tasks, and then send the machine home.
Another benefit for rehab: parents don't always have time or enough patience for repetitive rehabilitation sessions. But a robot never gets tired or bored.
"Imagine that a child's rehab requires a hundred arm movements to improve precise hand-coordination movements," said Howard. "He or she must touch and swipe the tablet repeatedly, something that can be boring and monotonous after a while. But if a robotic friend needs help with the game, the child is more likely to take the time to teach it, even if it requires repeating the same instructions over and over again. The person's desire to help their 'friend' can turn a five-minute, bland exercise into a 30-minute session they enjoy."
In a new study, Howard and Park asked grade-school children to play Angry Birds with an adult watching nearby. Afterwards, the kids were asked to teach a robot how to play the game. The children spent an average of nine minutes with the game as the adult watched. They played nearly three times as long (26.5 minutes) with the robot. They also interacted considerably more with the robot than the person. Only 7 percent of their session with the adult included eye contact, gestures and talking. It was nearly 40 percent with the robot.
Their interaction times with the adult were significantly less than those in the typically developing group. They were about the same with the robot. The findings were presented in June at the Rehabilitation Engineering and Assistive Technology Society of North America (RESNA) 2014 Annual Conference in Denver.
Edit: with apologies to Finland for saying Angry Birds was by Swedish developers and not catching it until 18 people read it.
Source: Georgia Institute of Technology