Sören Lenman

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This paper presents the first stages of a project that studies the use of <i>hand gestures</i> for interaction, in an approach based on computer vision. A first prototype for exploring the use of marking menus for interaction has been built. The purpose is not menu-based interaction per se, but to study if marking menus, with practice, could support the(More)
The paper gives an overview of the field of computer vision based hand gesture interfaces for Human-Computer Interaction, and describes the early stages of a project about gestural command sets, an issue that has often been neglected. Currently we have built a first prototype for exploring the use of pieand marking menus in gesture-based interaction. The(More)
This video demonstration is based on scenarios of a family's everyday activities supported by video mediated communication (VMC). It was recorded in comHOME, a concept dwelling of the future. The principal issue explored in the comHOME project, and in the video, concerns various aspects of private and public spaces using VMC. The design concept is based on(More)
The effect of touchscreen inclination and elbow support on arm fatigue was studied in a factorial design. Inclinations were 0&#176;, 22.5&#176;, 30&#176; 45&#176;, 60&#176; and 90&#176; from horizontal. The subjects could or could not rest the elbow on the desk. Results indicated that an inclination of 22.5&#176; was least fatiguing. The inclination of(More)
In this paper we present experiences from a two-month prestudy on the possible creation of a communication environment (Media Space) between the three different locales of a distributed Call Centre. A spectrum of user-oriented methods was used in the study, and the staff at the Call Centre took part through interviews, discussions, and a workshop. The(More)
The Centre for user oriented IT Design (CID) at the Royal Institute of Technology (KTH) in Stockholm, Sweden was established in 1995. CID brings together researchers and designers from computer science, arts, media and communication, and human sciences with industry and user organizations. The focus is on the design and study of usable, interactive IT(More)
We report from a usability study of Digital Television (DTV) with 30 subjects. It was found that content and interface elements should be evaluated in terms of concrete and conceptual nearness with respect to all parts of the DTV experience. Additionally, several features of the DTV application interface were salient in user evaluations: navigation and(More)