Takami Yasuda

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A virtual manipulation system for origami (paper folding) is described. A piece of paper defined in a computer can be deformed interactively by picking and moving a corner vertex of a paper face on a graphic screen using a mouse. Three kinds of folding operations and a curving operation transform the paper into a three-dimensional figure made of flat or(More)
A fundamental light reflection model that takes into account the internal structure of cloth to render the peculiar gloss of cloth objects is presented. In developing this model, the microscopic structure of textiles was considered. The model represents fabric features such as fiber's cross-sectional shape or weave. By measuring the reflected light(More)
We have developed an automatic composition system for ballet choreographies by using 3DCG animation. Our goal is to develop useful tools in dance education such as a creation-support system for ballet teachers and a self-study system for students. The algorithm for automatic composition was integrated to create utilitarian choreographies. As a result of an(More)
In observing a virtual 3D object displayed stereoscopically on a large screen, there is often a difference between the calculated depth and the perceived depth. This paper presents a method for reducing such differences of depth. To do this, we modify both the viewing position and the screen position in the stereoscopic calculation. The optimal amount of(More)
Our research approach focuses on creating and composing new dance choreographies. As a case study of Web3D technology and its application, we have developed a system that supports the creation of classical ballet choreography in 3D environments. By using existing 3DCG applications, one can simulate already captured or strictly described dance animation.(More)