Subdivision Surfaces provide a compact way to describe a smooth surface using a mesh model. They are widely used in 3D animation and nearly all modern modeling programs support them. In this work we describe a complet...
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ISBN:
(纸本)9783981080162
Subdivision Surfaces provide a compact way to describe a smooth surface using a mesh model. They are widely used in 3D animation and nearly all modern modeling programs support them. In this work we describe a complete parallel pipeline for real-time interactive editing, processing and rendering of smooth surface primitives on the Cell BE. Our approach makes it possible to edit and render these high-order graphics primitives passing them directly to a parallel pipeline which tessellates them just before rendering. We describe a combination of algorithmic, architectural and back-end optimizations that enable us to render smooth subdivision surfaces in real time and to dynamically deform 3D models represented by subdivision surfaces.
The simulation of the irregular objects is a difficult and attractive problem in computer graphics. Flame simulation is of a great challenge because of the variability of the shape of fire. A new method of flame simul...
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The simulation of the irregular objects is a difficult and attractive problem in computer graphics. Flame simulation is of a great challenge because of the variability of the shape of fire. A new method of flame simulation based on the improved particle system and texture rendering is proposed in this paper. This model is introduced to study structured particle and the performance of the random process of wind. It can generate flames with different details. To reduce the number of the particles in the calculation process, we use the multi-texture technology. This overcomes the defects of large calculation scale for particle system. Experimental results show that the proposed method can meet the requirements of real time and reality.
We present a real-time online animation and lip syncing solution based on personal motion sensing for use in entertainment and theme park applications. Our solution streams real-time motion capture based animation, vi...
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We present a real-time online animation and lip syncing solution based on personal motion sensing for use in entertainment and theme park applications. Our solution streams real-time motion capture based animation, video and voice data over the Internet using UDP. Motion capture data is streamed from the eMove mocap suit over the Internet into a client application, which provides a lip synced 3D animated character or puppet. Applications include online digital puppeteering and games where the character is animated in real time.
In this paper we present a new cross-platform approach for video game delivery in wired and wireless local networks. The developed 3D streaming and video streaming approaches enable users to access video games on set ...
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In this paper we present a new cross-platform approach for video game delivery in wired and wireless local networks. The developed 3D streaming and video streaming approaches enable users to access video games on set top boxes and handheld devices that natively are not capable to run PC games. During the development of the distributed gaming system we have faced a number of challenges and problems posed by the hardware and network limitations. In order to solve these problems we have developed a multilevel testing methodology which is based on user assessment and technical measures for the system under development. In this paper we focus on the technical measures and instrumentation that we use for the system's performance measurement and testing. The benefits of our testing methodology are demonstrated through examples from the development and testing work.
Flowers are complex structures and always change their shape with the environment, such as sun, water and neighbors. However, some mathematic rules can be found in the growth which one of them is the phyllotactics pat...
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Flowers are complex structures and always change their shape with the environment, such as sun, water and neighbors. However, some mathematic rules can be found in the growth which one of them is the phyllotactics pattern. It exists in flower system and often arranges the flower petals in spiral patterns. In this paper the flowers modeling are generated by using the corresponding phyllotactics pattern character with the results being more natural. Furthermore, the modeling process is decomposed two parts: the petal, leaf and stem creating with the geometry editor and the flowers overall silhouette shape generating with the structure editor. The user can change the parameters and recursion times by the interactive interface. The manipulation is simply.
Because the current triangle mesh simplification algorithm base on edge collapse have the problem that it always miss the Geometric Features of models,we present a new method of edge collapse triangle mesh *** new met...
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Because the current triangle mesh simplification algorithm base on edge collapse have the problem that it always miss the Geometric Features of models,we present a new method of edge collapse triangle mesh *** new method based on the classical algorithm QEM,using Guassian curvature we define the concept of curvature factors of collapsing edge and embed it into the original Garland's quadric error metric,so that the metric can not only measure distance error but also reflect geometric variations of local *** experimental results show that the new method can reserve quite a number of important shape features and reduce visual distortion effectively at low levels of detail.
The teaching goals can be optimized with the help of Multimedia-aided Instruction system. The Sluice Design Teaching Software is a kind of computer teaching progress which is designed according to the teaching goals o...
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The teaching goals can be optimized with the help of Multimedia-aided Instruction system. The Sluice Design Teaching Software is a kind of computer teaching progress which is designed according to the teaching goals of Hydraulic Engineering major as well as in the need of education. The aim that we do so is to train the students' applied ability and the ability that they can solve realistic problem with computer. This article discussed the developing goal of Sluice Design Teaching Software as well as its characteristics and advancement. This article also introduced the using method and effect of this software.
Using 3D graphics technology to rich traditional chart presentation will make presentations carry more information and be easily understood by audience. The paper discusses a flex visualisation platform for daily canc...
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ISBN:
(纸本)9781424467754;9781424467761
Using 3D graphics technology to rich traditional chart presentation will make presentations carry more information and be easily understood by audience. The paper discusses a flex visualisation platform for daily cancer tumour experiment data. This platform allows users to build different 3D scenes for different purposes. The combination method of the scene is easy and extendable.
We propose a system that allows multiple groups of users at remote locations to naturally share a 3D image of real objects. All users can interactively observe a 3D stereoscopic image without distortion from their own...
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ISBN:
(纸本)9781424462377;9781424462582
We propose a system that allows multiple groups of users at remote locations to naturally share a 3D image of real objects. All users can interactively observe a 3D stereoscopic image without distortion from their own viewpoints. The system basically consists of a combination of systems: imaging and display. The imaging system captures the real object's images from certain number of viewpoints which are used to generate stereoscopic images from arbitrary viewpoints based on an image-based rendering technique implemented on GPU. The display system interactively generates a 3D virtual image of the real object based on the IllusionHole technique. Users at one place just put the real object on their imaging system to capture a set of its images from sparse viewpoints around it; other groups of multiple users at remote places connected by networks observe its virtual image from arbitrary viewpoints on their display systems.
Currently, people finds that there are more and more important accounts need to remember. It is a serious problem that how to make their private accounts information in safe keeping, because the leaked usernames and p...
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ISBN:
(纸本)9781424466016;9780769540085
Currently, people finds that there are more and more important accounts need to remember. It is a serious problem that how to make their private accounts information in safe keeping, because the leaked usernames and passwords always cause great trouble for the owner. In this paper, we will improve a proposed system previously for keeping more kinds of digital private information in safe. The methodology of proposed system keeps information in a kind of invisible state via steganography techniques. The proposed system is based on spatial domain techniques.
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