Relationship between the Least Mesh Numbers of Models and Distance of Viewpoint in Efficient Real-Time Rendering

2011 ◽  
Vol 130-134 ◽  
pp. 213-216
Author(s):  
Li Hua Yang ◽  
Xiao Dong Sun ◽  
Hong Bin Zhang
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
3D Model ◽  
Virtual Reality System ◽  
Web Based ◽  
Optimal Mesh

LOD (detail of level) technology is crucial technologies in virtual reality system, it’s more important especially in web based 3D model rendering. For the LOD technology reduces the complexity of computation which makes the possibility of real time rendering. This paper will discuss the minimum optimal mesh numbers which a model should be under different distance of viewpoint.

scholarly journals Optimization of building model based on 5G virtual reality technology in computer vision software

2021 ◽  
Vol 18 (6) ◽  
pp. 7936-7954
Author(s):  
Ziyou Zhuang ◽  
Keyword(s):  
Computer Vision ◽  
Virtual Reality ◽  
Real Time ◽  
Building Materials ◽  
Scale Transformation ◽  
Correct Result ◽  
Model Optimization ◽  
Optimization Strategy ◽  
Virtual Reality System ◽  
Virtual Reality Technology

<abstract> <p>The 5G virtual reality system needs to interact with the user to draw the scene in real time. The contradiction between the complexity of the scene model and the real-time interaction is the main problem in the operation of the virtual reality system. The model optimization strategy of architectural scene in virtual reality design is studied, and the method of architectural scene model optimization is summarized. This article aims to study the optimization of computer vision software modeling through 5G virtual reality technology. In this paper, the optimization of the architectural model is studied by the method of image gray scale transformation, computer vision detection technology and virtual modeling technology. The four experiments are comprehensive evaluation and quantitative evaluation, comparison of channel estimation performance of different pilot structures, comparison of calculated and true values of external azimuth elements, and the effect of window-to-wall ratio on energy consumption per unit of residential building. The results show that hollow bricks of building materials have a great impact on the environment. The values of the three pixel coordinates X, Y, and Z calculated by the unit quaternion method are 1.27, 1.3, and -6.11, respectively, while the actual coordinate positions are 1.25, 1.37, and -6.22, respectively. It can be seen that the outer orientation element value calculated by the quaternion-based spatial rear intersection method is not much different from the actual value, and the correct result can be accurately calculated.</p> </abstract>

Plane Reflection in the Application of Virtual Reality System

2013 ◽  
Vol 427-429 ◽  
pp. 1637-1640
Author(s):  
Ke Ming Pu ◽  
Feng Wu ◽  
Hong Bin Jiang ◽  
Dan Lv Sun
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Mirror Image ◽  
Virtual Reality System ◽  
Reflection Plane

Real-time plane reflection is shown by adding a mirror camera. Roaming scene, capture the mirror image of the scene and the mirror image map to the reflection plane by projection. The multi-layer superimposed image is processed on the reflection plane, by different of superposition algorithms, different results obtained, that displays the effect of different plane reflection.

scholarly journals Modeling of submarine initial pipe-laying process and its real-time semi-physical virtual reality system

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401774773 ◽  
Author(s):  
Xiujun Xu ◽  
Liquan Wang ◽  
Zhen Li ◽  
Shaoming Yao ◽  
Xiaoming Fang
Keyword(s):  
Mathematical Model ◽  
Virtual Reality ◽  
Real Time ◽  
Physical Simulation ◽  
Ocean Current ◽  
Virtual Reality System ◽  
Wave Load ◽  
Engineering Project ◽  
Load Effects ◽  
The Mathematical Model

The mathematical model of the initial pipeline and cable process is created with regard to the ocean current load and wave load; and the mathematical model is solved by the numerical quasi-Newton method to investigate the effects of the current and wave load on the shape and force of the pipeline and cable during the initial pipe-laying process. On this basis, semi-physical simulation system is built to visualize the initial pipe-laying process. The simulation results are compared with OFFPIPE’s results to verify the mathematical model. The current and wave load effects on the shape and tension of the pipeline and cable are analyzed. This real-time virtual reality system will help engineering project in risk management and prediction as well as staff training, which is of vital significance for minimizing the risk of the actual pipe laying and improving the efficiency of the pipe-laying work.

VRCEMIG: A virtual reality system for real time control of electric substations

2013 ◽  
Author(s):  
Alexandre Cardoso ◽  
Edgard Lamounier ◽  
Gerson Lima ◽  
Luciene Oliveira ◽  
Leandro Mattioli ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Virtual Reality System ◽  
Real Time Control ◽  
Time Control

Research of the Application of Virtual Reality in Green Construction

2012 ◽  
Vol 462 ◽  
pp. 592-597 ◽  
Author(s):  
Hai Fei Si ◽  
Zhong Yang
Keyword(s):  
Virtual Reality ◽  
Real Time ◽  
Three Dimensional ◽  
Construction Cost ◽  
Virtual Reality System ◽  
Virtual Reality Technology ◽  
Green Construction ◽  
Desktop Virtual Reality ◽  
Time Simulation ◽  
Very High

Virtual Reality technology is wild applied in various fields with its development. This article studied the application of virtual reality technology in green construction. On the discussion of the utility of desktop virtual reality system to accomplish the three-dimensional real-time simulation of green construction project, it shows that the application of virtual reality technology in the simulation of green construction not only reduces the construction cost but also breaks the limitation of time and space. The research of this paper has very high applied value.

Sistema de Realidad Virtual Para Entrenamiento y Análisis Biomecánico de Pacientes Con Amputación Transhumeral

2021 ◽  
Author(s):  
◽  
F. J. Rodal Martínez
Keyword(s):  
Virtual Reality ◽  
Virtual Environments ◽  
Real Time ◽  
Motion Capture ◽  
Biomechanical Analysis ◽  
Immersive Virtual Reality ◽  
Motion Capture System ◽  
Virtual Reality System ◽  
Demographic Dynamics ◽  
Difficulty Walking

Virtual Reality is defined as an interactive and multisensory computer system in which an environment is simulated in real time, and there can be two categories: Immersive Virtual Reality and Non-Immersive Virtual Reality. To date, Virtual Reality has been used in different areas such as education, entertainment and rehabilitation. The WHO estimates that around 15% of the world's population suffers from a disabling condition. This organization in conjunction with the ISPO determined that about 0.5% of the world's population requires an orthotic or prosthetic system. In Mexico, in the National Survey of Demographic Dynamics it is estimated that 10.9% of the population has difficulty walking or moving. The objective of this project is to design a Virtual Reality system that allows training transhumeral amputees in the use of the prosthesis. 2 virtual environments and 8 3D-characters were created so that the subjects to be trained can select between these possibilities to carry out the training sessions. The subjects control these 3D-characters in real time through a motion capture system, which also generates a biomechanical analysis of the movement of the shoulder during the execution of the movements.

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