3,439 research outputs found
Gameplay experience in a gaze interaction game
Assessing gameplay experience for gaze interaction games is a challenging
task. For this study, a gaze interaction Half-Life 2 game modification was
created that allowed eye tracking control. The mod was deployed during an
experiment at Dreamhack 2007, where participants had to play with gaze
navigation and afterwards rate their gameplay experience. The results show low
tension and negative affects scores on the gameplay experience questionnaire as
well as high positive challenge, immersion and flow ratings. The correlation
between spatial presence and immersion for gaze interaction was high and yields
further investigation. It is concluded that gameplay experience can be
correctly assessed with the methodology presented in this paper.Comment: pages 49-54, The 5th Conference on Communication by Gaze Interaction
- COGAIN 2009: Gaze Interaction For Those Who Want It Most, ISBN:
978-87-643-0475-
A perceptual comparison of empirical and predictive region-of-interest video
When viewing multimedia presentations, a user only
attends to a relatively small part of the video display at any one point in time. By shifting allocation of bandwidth from peripheral areas to those locations where a userâs gaze is more likely to rest, attentive displays can be produced. Attentive displays aim to reduce resource requirements while minimizing negative user perceptionâunderstood in this paper as not only a userâs ability to assimilate and understand information but also his/her subjective satisfaction with the video content. This paper introduces and discusses a perceptual comparison between two region-of-interest display (RoID) adaptation techniques. A RoID is an attentive display where bandwidth has been preallocated around measured or highly probable areas of user gaze. In this paper, video content was manipulated using two sources of data: empirical measured data (captured using eye-tracking technology) and predictive data (calculated from the physical characteristics of the video data). Results show that display adaptation causes significant variation in usersâ understanding of specific multimedia content. Interestingly, RoID adaptation and the type of video being presented both affect user perception of video quality. Moreover, the use of frame rates less than 15 frames per second, for any video adaptation technique, caused a significant reduction in user perceived quality, suggesting that although users are aware of video quality reduction, it does impact level of information assimilation and understanding. Results also highlight that user level of enjoyment is significantly affected by the type of video yet is not as affected by the quality or type of video adaptationâan interesting implication in the field of entertainment
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