Naohisa Sakamoto

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Hardware-accelerated image composition for sort-last parallel rendering has received increasing attention as an effective solution to increased performance demands brought about by the recent advances in commodity graphics accelerators. So far, several different hardware solutions for alpha and depth compositing have been proposed and a few of them have(More)
We consider that eye-to-eye contact during face-to-face communication is important to understand each other in everyday communication. However, 3D display usually requires deflection glasses and a head mount display (HMD), and it is difficult to carry out eye-to-eye contact in such a condition. To support face-to-face communication by group in(More)
The article presents the extension of a common decision tree concept to a multidimensional - vector - decision tree constructed with the help of evolutionary techniques. In contrary to the common decision tree the vector decision tree can make more than just one suggestion per input sample. It has the functionality of many separate decision trees acting on(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)
In this paper, we describe a particle modeling technique for rendering 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 large irregular volume datasets. Previously we proposed a volume rendering without the visibility-sort, which represents(More)