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The problem of tracking hands and fingers on natural scenes has received much attention using passive acquisition vision systems and computationally intense image processing. We are currently studying a simple active tracking system using a laser diode, steering mirrors, and a single non-imaging detector, which is capable of acquiring three dimensional(More)
The 'Smart Laser Projector' (SLP) is a modified laser-based projector capable of displaying while simultaneously using the laser beam (at the same or different wavelength or polarization) as a LIDAR probe gathering information about the projection surface (its borders, 3d shape, relative position and orientation, as well as fine texture and spectral(More)
We are developing a modular electronic device to allow users to perceive and respond simultaneously to multiple spatial information sources using haptic stimulus. Each module of this wearable " haptic radar " acts as an artificial hair capable of sensing obstacles, measuring their range and transducing this information as a vibro-tactile cue on the skin(More)
This paper describes a finger gesture recognition system based on an active tracking mechanism. The simplicity of this tracking system is such that it would be possible to integrate the whole system on a chip, making it an interesting input interface for portable computing devices. In this context, recognition of gestural characters allows information to be(More)
Recently the miniaturization of mobile devices has progressed and such devices are difficult to have input interface that has wide operation area on their surface. Conventional input interface on a cell phone, such as a touch panel or keypad, has limited operation area. There has been many approaches to handle this problem, but they require users to wear(More)
We propose a variant of the multi-touch display technology that introduces an original way of manipulating three-dimensional data. The underlying metaphor is that of a deformable screen that acts as a boundary surface between the real and the virtual worlds. By doing so, the interface can create the illusion of continuity between the userpsilas real space(More)
Mobile and ubiquitous systems create opportunities for new kinds of interactivity in public spaces. Examples of human-technology interactions in public spaces include interactive displays on different scales; mobile systems enabling projection in public environments; smart interactive and reactive objects; tangible interfaces; and public media arts.(More)
Meta-perception is both an interaction design concept and the theme of a research group at the University of Tokyo. As a design concept, meta-perception is used to describe experience of novel phenomena made possible by devices that extend the human precepts. As a research group, our goal is to develop methods for capturing and manipulating information that(More)