Ali Alavi
Publications by Ali Alavi (bibliography)
Alavi, Ali, Kunz, Andreas M., Sugimoto, Masanori and Fjeld, Morten (2011): Dual Mode IR Position and State Transfer for Tangible Tabletops. In: Interactive Tabletops and Surfaces 2011 Conference November 13-16, 2011, Kobe, Japan. .
“This paper presents a method for tracking multiple active tangible devices on tabletops. Most tangible devices for tabletops use infrared to send information about their position, orientation, and state. The method we propose can be realized as a tabletop system using a low-cost camera to
detect position and a low-cost infrared (IR) receiver to detect the state of each device. Since two different receivers (camera and IR-receiver) are used simultaneously we call the method dual mode. Using this method, it is possible to use devices with a large variation of states simultaneously on a tabletop, thus having more interactive devices on the surface.
”
© All rights reserved Alavi et al. and/or their publisher
Alavi, Ali, Clocher, Brice, Smith, Allab, Kunz, Andreas M. and Fjeld, Morten (2011): Multi-State Device Tracking for Tangible Tabletops. In: SIGRAD Swedish Chapter of Eurographics November 17-18, 2011, Stockholm, Sweden. .
“Tangible tabletops where actively emitting devices (TUIs) are tracked to inform about their identity, position, orientation, and state can provide rich interaction within complex, dynamic scenarios. TUI states assuming values over a highresolution large range requires sending many bits for each update and comes at the cost of system update rate. In the first part of this paper, we present an in-house map application where interaction with time-dependent contour lines may benefit from high-resolution TUI states. Prototypical TUI concepts such as slider, ruler, and knobs further motivate the benefit of high-resolution tracking. In the second part of the paper, we depart from a device tracking overview and then show how tangible devices for tabletops typically use infrared (IR) emitters and a camera to send information about their position, orientation, and state. We propose a method that can be realized as a tabletop system using a low-cost camera detecting position combined with a low-cost infrared receiver detecting the state of each device. Since both kinds of sensors are used simultaneously we call the method _dual mode._ This method offers high-resolution tracking without having to compromise on update rate”
© All rights reserved Alavi et al. and/or their publisher
Alavi, Ali, Clocher, Bryce, Smith, Allan, Kunz, Andreas M. and Fjeld, Morten (2011): Multi-State Device Tracking for Tangible Tabletops. In: SIGRAD 2011 17-18 November, 2011, Stockholm. .
“Tangible tabletops where actively emitting devices (TUIs) are tracked to inform about their identity, position, orientation, and state can provide rich interaction within complex, dynamic scenarios. TUI states assuming values over a highresolution large range requires sending many bits for each update and comes at the cost of system update rate. In the first part of this paper, we present an in-house map application where interaction with time-dependent contour lines may benefit from high-resolution TUI states. Prototypical TUI concepts such as slider, ruler, and knobs further motivate the benefit of high-resolution tracking. In the second part of the paper, we depart from a device tracking overview and then show how tangible devices for tabletops typically use infrared (IR) emitters and a camera to send information about their position, orientation, and state. We propose a method that can be realized as a tabletop system using a low-cost camera detecting position combined with a low-cost infrared receiver detecting the state of each device. Since both kinds of sensors are used simultaneously we call the method _dual mode._ This method offers high-resolution tracking without having to compromise on update rate”
© All rights reserved Alavi et al. and/or their publisher
Alavi, Ali, Kunz, Andreas, Sugimoto, Masanori and Fjeld, Morten (2011): Dual mode IR position and state transfer for tangible tabletops. In: Proceedings of the 2011 ACM International Conference on Interactive Tabletops and Surfaces 2011. pp. 278-279.
“This paper presents a method for tracking multiple active tangible devices on tabletops. Most tangible devices for tabletops use infrared to send information about their position, orientation, and state. The method we propose can be realized as a tabletop system using a low-cost camera to detect position and a low-cost infrared (IR) receiver to detect the state of each device. Since two different receivers (camera and IR-receiver) are used simultaneously we call the method dual mode. Using this method, it is possible to use devices with a large variation of states simultaneously on a tabletop, thus having more interactive devices on the surface.”
© All rights reserved Alavi et al. and/or ACM Press
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