遭遇型形状提示システムにおける任意曲面の形状提示に関する一考察

概要

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It is important to represent the shape of an object in a virtual environment (a virtual object), because it enhances ambience in case an operator contacts a virtual object. Recently several systems have been proposed which aims to represent the shape of a virtual object and they are classified into "encounter type". In encounter type an operator feels touching a virtual object by measuring his/her motion and locating a corresponding real object in order to approximate the shape around the contact point. However, it is not proper to directly locate the real object so that it approximates around the contact point because the contact point is not always continuous and therefore the trajectory of the real object will not be continuous. In this paper we consiger the continuity of the contact point and propose a method to set up the continuous trajectory of the real object when representing arbitrary surface in encounter type. Proposed method realizes its continuous trajectory by changing the manner of setting up its trajectory according to the distance between the fingertip and the represented surface, and by interpolating the trajectory between both manners. Results of numerical simulation applying a proposed method to several quadratic surfaces show its validity.
日本バーチャルリアリティ学会,東京大学工学部の論文