Takehiko Ohno

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In this paper we introduce a novel gaze tracking system called <i>FreeGaze,</i> which is designed for the use of everyday gaze interaction. Among various possible applications of gaze tracking system, Human-Computer Interaction (HCI) is one of the most promising elds. However, existing systems require complicated and burden-some calibration and are not(More)
Human eye gaze is a strong candidate to create a new application area based on human-computer interaction. To implement a really practical gaze-based interaction system, gaze detection must be realized without placing any restriction on the user's behavior or comfort. This paper describes a gaze tracking system that offers freehead, simple personal(More)
We propose a gaze movement model that enables an embodied interface agent to convey different impressions to users. Managing one's own impression to influence the behaviors of others plays an important role in human communications. To create a new application area which involves agents in this kind of social interaction, interface agents that manage their(More)
Eye gaze interface has potential as a new HumanComputer Interaction method, evident in the numerous kinds developed so far. However, in order to make sure that such an interface is both useful and convenient in daily life for a wide range of users, we need to undertake more indepth studies of human behavior in order to adapt the design to human factors. In(More)
Historically, Participatory Design (PD) was introduced and applied in the Scandinavian and American context as a practical design method for collective creativity and stakeholder involvement. In this paper, by fusing game elements into PD, we suggest a first step towards a culturally independent PD method called the ICT Service Design Game to ease the(More)
We propose a head-free, easy-setup gaze tracking system designed for a gaze-based Human-Computer Interaction. Our system enables the user to interact with the computer soon after catching the user's eye blinks. The user can move his/her head freely since the system keeps tracking the user's eye. In addition, our system only needs a 10 second calibration(More)
A novel gaze tracking method that requires only one calibration marker for personal calibration is proposed. In general, personal calibration is known to be a troublesome task, which requires the user looks at nine to twenty calibration markers in succession. Unlike traditional methods, the proposed method drastically reduces the cost of personal(More)
Current digital documents provide few traces to help user browsing. This makes document browsing difficult, and we sometimes feel it is hard to keep track of all of the information. To overcome this problem, this paper proposes a method of creating traces on digital documents. The method, called EyePrint, generates a trace from the user's eye gaze in order(More)
Interactive and autonomous agents might be common in everyday life in the future; we expect that such agents will have the ability to communicate with people naturally. For natural communication, the agents should speculate about the intentions of the people they interact with. To enable agents to speculate about intentions like deception, we focused on(More)