Effect of Unresponsive Time for User's Touch Action of Selecting an Icon on the Video Mirror Interface

摘要

Contactless input methods implementing body motion allow users to control computer systems easily and enjoyably. We focus on the "video mirror interface" as an example of these methods. A user of the video mirror interface can operate the computer system by selecting virtual objects on a screen with his/her hand. However, if a selection operation is completed as soon as the user touches the virtual object, erroneous selections will frequently occur. Therefore, it is necessary to insert a certain period of unresponsiveness after a user's touch action to prevent selection error. We evaluate effects of the unresponsive time when selecting a virtual object in a video mirror interface. The result of an experimental evaluation indicates that an acceptable range for the unresponsive time is 0.3 to 0.5 s.