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Hand motion tracking with tablet devices as a human-computer interface for people with cerebral palsy

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This article describes experiments which were conducted with two groups of people: healthy and with cerebral palsy. The purpose of the experiments was to verify two hypothesis: 1) that people with cerebral palsy can interact with computer using their natural gestures, 2) that games for tablets can be a research tool in experiments with young disabled people. Two games, which require the user to make simple gestures to accomplish given tasks, were designed and implemented on a tablet device with a built-in camera. Because of the camera limitations, the tracking process employs blue markers. By moving hand with a blue marker it was possible to perform navigation tasks in both games. In the first game the user had to gather, in 30 seconds, as many objects as possible. The objects were placed on the screen in a grid pattern. In the second game the user had to catch one object 20 times. The position of the object changed after each catch. Results obtained by healthy people were considered as a reference. However there are significant differences between measured parameters in both groups, all persons - healthy and with cerebral palsy - were able to accomplish the tasks by using simple gestures. Games for tablets turned out to be a very attractive research tool from the perspective of young, disabled users. They participated in measurement sessions much more willingly than in experiments without games.
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Bibliogr. 17 poz., tab., wykr.
  • AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland, Faculty of Electrical Engineering, Automatics, Computer Science and Biomedical Engineering Department of Automatics and Biomedical Engineering
  • AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, Poland, Faculty of Computer Science, Electronics and Telecommunication Department of Computer Science
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