David Jean, Kwangjin Hong, Keechul Jung
(Human-computer Interaction Lab, Graduate school of Soongsil university, Seoul 156-743, Korea)
Abstract：In this paper, we investigate methodologies to improve direct-touch interaction on invisible and intangible spatial input. We firstly discuss about the motive of looking for a new input method for whole body interaction and how it can be meaningful. We also describe the role that can play spatial interaction to improve the freedom of interaction for a user. We propose a method of spatial centered interaction using invisible and intangible spatial inputs. However, given their lack of tactile feedback and visual representation, direct touch interaction on such input can be confused. In order to make a step toward understanding causes and solutions for such phenomena, we made 2 user experiments. In the first one, we test 5 setups of helper that provide information of the location of the input by constraining the dimension it is located at. The results show that using marker on the ground and a relationship with the height of the user’s body improve significantly the locative task. In the second experiment, we create a dancing game using invisible and intangible spatial inputs and we stress the results obtained in the first experiment within this cognitively demanding context. Results show that the same setup of helper is still providing very good results in that context.
Key words：human-computer interaction (HCI); spatial centered interaction; whole body interaction; input method
CLD number： TP391.38 Document code： A
Article ID： 1674-8042(2012)02-0137-009 doi： 10.3969/j.issn.1674-8042.2012.02.0
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