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We are developing medical education support system using Virtual Anatomical Model (VAM). VAM is a display system for viewing and examining the virtual mockups of internal organs. Virtual internal organs are superimposed onto real object in the shape of human body, by image projection. The method is based on the distortion cancellation algorithm to project an image onto curved screen without distortion...
This study describes the relation between the vection produced by optical flow and that created by galvanic vestibular stimulation. Vection is the illusion of self motion and is most often experienced when an observer views a large screen display containing a translating pattern. This illusion has only limited fidelity and duration unless it is reinforced by confirming vestibular information. Galvanic...
We have proposed and developed a tactile display that uses electrical current as a stimulus. The main characterstic of this display is that each type of mechanoreceptor is stimulated separately so that "tactile primary colors" are defined. In this paper, we describe how we fabricated a 4/spl times/4 array electrode system to present surface roughness, patterns and relative motions.
We present an autostereoscopic display named TWISTER I (Telexistence Wide-view-angle Immersive STEReoscope, Model I), which is designed for a face-to-face telecommunication system called "mutual telexistence". By rotating display units that consist of LED arrays and a barrier around a viewer, TWISTER I can display panoramic stereoscopic images that can be observed without the use of special...
The authors first analyze dynamic properties of rapidly adapting mechanoreceptors in order to derive a principle of tactile displays. It is shown that Meissner corpuscles with coiled axons and Pacinian corpuscles with layered lamellae are suited to detect equivoluminal distortion of skin. Combining these analyses with a model of a contact and a relative motion between an object and the skin, it is...
As a basis for a tactile display, it is important to understand the mechanism of tactile sensation, so we analyze the elastic waves inside a finger in tactile exploration with a two-layered, half-infinite elastic finger model, and derive a mapping from the shapes of objects to the displacements of the mechanoreceptors. It is shown that the mapping from displacements of the finger surface to displacements...
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