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In the velvet hand illusion (VHI), a person rubs his/her hands together on either side of wires strung through a frame, producing the sensation of rubbing a very smooth and soft surface like velvet. We focus on VHI to determine the specifications of an actuator for a tactile display enhanced by VHI. We investigate the relationship between wire distance and intensity of illusionary sensation using...
In order to settle the present problem of lack of laboratory equipment in colleges, it supplies a method of creating remote virtual laboratory with taking a specific experiment for example: it programs the computer with the software LabVIEW on the base of connecting hardware and computer well, and then use Web publish and DataSocket in LabVIEW to make the remote control functions of experiments true...
Collision detection algorithm based on bounding box is an important algorithm of collision detection.The principle and effectiveness of axis-aligned bounding boxes(AABB)method, oriented bounding box method(OBB), discrete orientation polytopes (k-DOP)method were discussed in detail. The results of analysis prove that the simpleness of bounding box is in contradiction with the compactness of wrapped...
Combining Geographic Information System(GIS) platform with three-dimension(3D) modeling and virtual reality technology, a strategy of visualization of 3D geological bodies and 3D orebody based on Supernatural GIS is proposed and the corresponding data structure is designed. By the direct human-computer interaction, many functions are realized, such as browse of dynamic panorama,3D virtual roaming,...
Tailor rolled blank(TRB) is an new techniques of metal sheets, its manufacturing technology is involved in the process of multi-fields and multi-subjects synergism. For shorted exploiting cycle, reducing designing cost and improving the shape quality, the design method, namely rapid virtual design, was put forward for modeling of TRB rolled processes. Its flow chart, design system and structure were...
Statistical data shows that a driver who was lack of the ability to discover potential risk situation and safe driving awareness was more probably to cause an accident. The safe driving awareness was considered as a factor in contributing to vehicle crashes. In this study, a creative method to improve safety awareness based on driving simulator was proposed. Firstly, the definition and classification...
The principal factors affecting the warpage of long-armed product during plastic injection process were discussed. Using injection process numerical simulation and design expertise, this paper studied the approach to decrease warpage degree with multi-gates injection. Taken one straight long-armed part as sample, the potential warpage caused by uneven cooling and non-uniform shrinkage with two or...
Children like cartoon games, a cartoon game for children should support more knowledge. Leaning nonverbal emotion interaction is a very important social skill for a child, how to animate nonverbal emotion interaction in a cartoon game is an interesting subject. Emotion cognitive structure of a virtual character is presented, emotion expression method is also proposed, a virtual character can express...
Designing a real world complex system requires to use decentralized artificial intelligence. Such a system involves self-organization techniques, advanced interaction models, real-time architectures... To simplify the design step, it can be necessary to reproduce the behavior of the whole designed system in a virtual environment before to deploy the designed application on the real world devices....
Sealed storage and access control are the characteristics of USB KEY integrated with smart card, a kind of USB KEY-based approach for virtual assets protection is presented. Virtual assets of users are stored in the hidden partition of USB KEY which is not able to read out, it would be displayed on the screen of USB KEY after user's PIN verified. If a PIN is blocked, it must be reloaded, it is designed...
In this paper we present a visibility-based beam tracing solution for the simulation of the acoustics of environment that makes use of a projective geometry representation. More specifically, projective geometry turns out to be useful for the pre-computation of the visibility among all the reflectors in the environment. The simulation engine has a straightforward application in the rendering of the...
The following topics are dealt with: audio processing; speech processing; security; fingerprinting based multimedia content management; virtual reality signal processing; video coding; joint source channel coding; and quality evaluation.
With the advent of Facebook and Twitter, people are demanding high-performance high-quality online multimedia systems where a large number of users can collaborate with each other. Incorporating these features usually results in the following issues: high bandwidth usage, lower interactivity, higher latency; and often, only low quality compressed multimedia content can be used. In this paper we present...
This paper studies how computer games can be used to popularize the forestry science knowledge and proposes a method of 3D game development based on Virtools platform, which creates 3D models in 3ds max and Maya, then realizes the game functions in Virtools. This paper designs and develops a game based on 3D forest scenes which gets a better balance between knowledge and gameplay. The game enhances...
Virtualization is a technology that lets you run multiple virtual machines on a single physical machine, by sharing the resources of that single computer across the virtual machines. While CPU, I/O devices and other resources are easily shared among the virtual machines, sharing of physical memory is much more difficult. Memory Management mechanisms such as Ballooning and Hotplug Memory are widely...
Computer Generated Forces (CGF) is virtual entities of combat force, which can be generated and controlled by computers. Human Behavior Representation (HBR) in CGF is critical for combat simulation. Yet, despite the considerable progress in related research, the challenge of dynamic task decomposition and allocation has remained largely unaddressed. This paper describes the task decomposition strategy...
Different virtual educational experiments (VEEs) have different frameworks and implementations in different disciplines. How to integrate different VEEs into one unified supporting platform is a challenging problem. The key problem of this integration is how to build a unified mathematical model for VEEs of diversified disciplines. However, most existing multi-domain uniform modeling (MDUM) approaches...
With the increasing demand for the application of future simulation technology and virtual reality, the virtual environment modeling techniques will become increasingly important. Three dimensional terrain is one of important factors of the natural scenes in virtual environment and it is also a significant composition of view system in virtual simulation field. Firstly, this paper describes the research...
There are many difficulties in the process of the training for the artillery radar's position selection, such as training field is limited, the evaluation method for training is laggard. To resolve the problem, a virtual simulation and training system was designed based on Virtual Reality technology. This system developed with tools of OpenGL, Multigen-Creator, VC++6.0, and created a 3D scene with...
Based on the analysis of virtual environment modeling and research on the OpenGL, this paper combines the graphics-based and image-based modeling methods to construct a virtual environment system model. Through a friendly Windows user interface, this system displays users with a realistic three-dimensional virtual environment to meet certain requirements of roaming and interoperability, which has...
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