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Ciprian Chelba

 

Publications by Ciprian Chelba (bibliography)

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2012
 
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Bi, Xiaojun, Chelba, Ciprian, Ouyang, Tom, Partridge, Kurt and Zhai, Shumin (2012): Bimanual gesture keyboard. In: Proceedings of the 2012 ACM Symposium on User Interface Software and Technology 2012. pp. 137-146. Available online

Gesture keyboards represent an increasingly popular way to input text on mobile devices today. However, current gesture keyboards are exclusively unimanual. To take advantage of the capability of modern multi-touch screens, we created a novel bimanual gesture text entry system, extending the gesture keyboard paradigm from one finger to multiple fingers. To address the complexity of recognizing bimanual gesture, we designed and implemented two related interaction methods, finger-release and space-required, both based on a new multi-stroke gesture recognition algorithm. A formal experiment showed that bimanual gesture behaviors were easy to learn. They improved comfort and reduced the physical demand relative to unimanual gestures on tablets. The results indicated that these new gesture keyboards were valuable complements to unimanual gesture and regular typing keyboards.

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