Abstract
An aesthetical image composition and mysterious stories are the main components of a hidden object game (HOG) to make it enjoyable. In an HOG, players find objects hidden in an image and inquired by a list. As far as we know, there have been insufficient studies to explore game elements such as the efficiency of game effects on an HOG to accelerate human activities. In this paper, we propose "wiping operation" to accelerate human activities for an HOG. In an HOG that we developed, first, an original image is transformed into a triangulated image. Then, during game play, the quickness of the wiping action by a player makes the level of detail of the triangulation finer and rougher. We did an experiment to investigate the performance of the wiping operation. Each player in the experiment wore a brain activity sensor to obtain a brain activity value during game play and answered a questionnaire after game play. We show the experimental results by the questionnaire and brain activity value to verify the effectiveness of the wiping operation.
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