Peiran Liu

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Augmented reality is a variation of virtual reality. It allows the user to see computer generated virtual objects superimposed upon the real world through the use of some kind of see-through head-mounted display. Human users of such system can interact with the virtual world and have additional information, such as character description of physical objects(More)
The computational cost of a collision detection (CD) algorithm on polygonal surfaces depends highly on the complexity of the models. A novel " locally refined " approach is introduced in this paper for fast CD in haptic rendering applications, e.g. haptic surgery and haptic sculpture simulations. Exact interference detections are performed on proposed(More)
This paper presents a novel approach for navigating in a Panorama-Based Virtual Environment (PBVE). A PBVE was constructed for the arbitrary view synthesis when navigating. Uses can interact with P BVE through augmented 3D graphic objects. Unlike traditional image-based virtual environment (VE) systems in which the functions of presenting 3D geometry and(More)
We introduce a novel approach, multiresolution collision detection, for fast and exact interference detection on continuous level-of-detail (LOD) representations of arbitrary triangle meshes undergoing rigid-body motion. A new algorithm, active bounding tree (AB-Tree), is presented to accelerate interference queries of three-dimensional models, which(More)
Augmented Reality (AR) is a variation of virtual reality. It allows the user to see computer generated virtual objects superimposed upon the real world through the use of s ome kind of see-through head-mounted display. Human users of such system can interact with the virtual world and have additional information, such as character description of physical(More)
Production of organic acids by microorganisms is of great importance for obtaining building-block chemicals from sustainable biomass. Extracellular accumulation of organic acids involved a series of transporters, which play important roles in the accumulation of specific organic acid while lack of systematic demonstration in eukaryotic microorganisms. To(More)
Augmented Reality (AR) is a departure from standard virtual reality in a sense that it allows users to see computer generated virtual objects superimposed over the real world through the use of see-through head-mounted display. Users of such system can interact in the real/virtual world using additional information, such as 3D virtual models and(More)
In the phenylpropanoid production process, p-coumaric acid is the most important intermediate metabolite. It is generally accepted that the activity of tyrosine ammonia-lyase (TAL), which converts l-tyrosine to p-coumaric acid, represents the rate-limiting step. Therefore, an error-prone PCR-based random mutagenesis strategy was utilized for screening(More)
This paper presents a new locally refined collision detection approach for large scale complex meshes in distributed virtual environments (DVEs) where exact and interactive interference detection is required. Transmitting models with millions of polygons is time consuming in comparison with transmitting simple models. Even if the models are transmitted in(More)
Permission is granted to quote short excerpts and to reproduce figures and tables from this report, provided that the source of such material is fully acknowledged. Abstract The computational cost of a collision detection (CD) algorithm on polygonal surfaces depends highly on the complexity of the models. A novel " locally refined " approach is introduced(More)