Takuma Kawamura

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In this paper, we propose a novel transfer function design technique for multivariate volume rendering. This technique generates a multidimensional transfer function by logical synthesis of variables and transfer functions. This technique enables analysts to extract correlation of variables and to combine multivariate surface and volume shapes. And this(More)
The Petaflow project aims to contribute to the use of high performance computational resources to the benefit of society. To this goal the emergence of adequate information and communication technologies with respect to high performance computing-networking-visualisation and their mutual awareness is required. The developed technology and algorithms will be(More)
This paper describes a level-of-detail rendering technique for large-scale irregular volume datasets. It is well known that the memory bandwidth consumed by visibility sorting becomes the limiting factor when carrying out volume rendering of such datasets. To develop a sorting-free volume rendering technique, we previously proposed a particle-based(More)
In this paper, we present a sorting-free technique for volume rendering of an irregular volume dataset. Although the importance of our particle-based volume rendering is widely recognized, its low image quality has been pointed out. Especially when the viewing point is located near the volume dataset, the footprint of the particle may be visible. To solve(More)
With the recent development of supercomputers, it is required to efficiently visualize the result of super-large scale numerical simulations on a few hundreds to a few ten thousands of parallel processes. Conventional offline-processing of visualization give rise to difficult challenges such as transferring large-scale data and reassembly of extensive(More)
As the aged population increases, increasing numbers of people require walking support as the strength of their leg muscles deteriorates. We have developed a flexible power walking assistant system based on pneumatic artificial muscle. To date, the walking assistance effect of this approach has been validated in experiments, but few subjects were recruited.(More)
This seminar serves as a practical guide to Particle-Based Volume Rendering (PBVR) and its client-server system, which is one of a promising technique for large-scale visualization. The remote visualization using commodity software takes a long time from a few hours to a few days because of the explosive increase of the original data or polygon size,(More)