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北美作业代写:Virtual reality technology

2018-09-07 来源: 51due教员组 类别: Essay范文

下面为大家整理一篇优秀的essay代写范文- Virtual reality technology,供大家参考学习,这篇论文讨论 了虚拟现实技术虚拟现实技术简称VR,或者是灵境技术,是新世纪兴起的一种新型信息技术。它也是一种基于可计算信息的沉浸式交互环境,让用户可以从自己的视点出发,利用自然的技能和某些设备对这一生成的虚拟世界中的对象进行交互作用、相互影响,从而产生亲临等同真实环境的感受和体验。

Virtual reality technology,虚拟现实技术,essay代写,作业代写,代写

With the rapid development of the information industry, more and more attention is paid to the innovative research and long-term development of information technology. As an important driving force of the development of information technology, "virtual reality" technology has become one of the hot issues. As a means of interaction between human and computer-generated virtual environment, people regard virtual reality technology as an important technology that is second only to the Internet to change the future of the world. Virtual scene roaming technology is an important branch of virtual reality technology. Due to its valuable 3I features -- immersion, interactivity and imagination, other roaming technologies and systems that use fixed roaming paths and other means cannot be compared with them. 3DS MAX 3d modeling tool and VRML modeling language were used to create the virtual scene. This paper briefly introduces the general situation of virtual reality technology.

Virtual reality technology is short for VR, also known as the soul technology, which is a new information technology emerging since the 1990s. Virtual reality technology is a kind of based on the calculation of the immersion of information interaction environment, specifically, is to use computer technology as the core of the modern high-tech to generate realistic visual, hearing, touch, integration of the particular range of virtual environment, allows the user to from their own point of view, the use of natural skills and some equipment for the interaction of the objects in the virtual world and interact with each other, resulting in equivalent to feel and experience the real environment. Virtual reality is a comprehensive technology integrating computer graphics, man-machine interface technology, sensor technology, psychology, human engineering and artificial intelligence. Due to its unique multisensory, immersive, interactive and autonomous nature, virtual reality technology has been widely used in aerospace, military, medical, education and even gaming fields. VR technology has been recognized as an important development discipline in the 21st century and one of the important technologies influencing people's life.

The research on the history of human culture development shows that the virtual reality technology has a long history. Human beings try to surpass the limitation of the expression of words and the restriction of time and space in different periods, and create virtual information environment with images, colors and surrounding conditions. The panorama that emerged in the 18th century was an early technology for constructing an immersive virtual experience. Since the middle of the 20th century, people have further developed the panoramic film and created the experience theater to break the screen wall. However, it was not until the appearance of the multimedia computer system that people really had the comprehensive function of comprehensively processing multiple kinds of information such as audio, video, image, data and text. And integrated by using the high performance of computer hardware and software and connected with all kinds of advanced sensor, is it possible to create a people make participants immersive and improve the ability of interaction, and can help and inspire the idea of humanization of multi-dimensional information space, creating a more complete virtual reality system. As summarized by Burdea g. in "Virtual Reality Systems and Application", the basic features of this Virtual Reality system can be represented as three "I", namely, immersion, interactivity and imagination. Due to the valuable 3I features -- immersion, interactivity and imagination, other roaming technologies and systems that use fixed roaming paths and other means cannot be compared with them.

Immersion is popularly interpreted as "immersive," which means participants will not intervene in the virtual environment with sharp eyes and intelligent brains, but will integrate into the virtual system with complete biological individuals. In this sense, immersion means experience, the combination of logic and image, and the unity of cognition and perception. It is this characteristic that makes virtual reality technology "the first intelligent technology that can guarantee the active function of the body in the process of knowledge exploration".

Interactive, virtual reality and is usually produced by CAD system model and the traditional 3 d animation is not the same, it is not a static world, but an open, interactive environment, virtual reality environment can affect or be affected by the user through control and monitoring device, namely, computer users will interact through three-dimensional equipment directly manipulate objects in the virtual world of computer given, objects in the virtual world is also able to make corresponding responses, real-time of virtual environment is the user object in the operational level, degree of nature of the feedback in the virtual environment and virtual environment for rearranging the way. The interaction between participants and virtual environment in virtual reality system makes the man-machine relationship in virtual reality technology have a new meaning.

Conceptualization, conceptualization characteristics show that virtual reality systems can construct situations that do not exist in reality or are difficult to observe but only appear in people's imagination. The interaction between human and virtual environment in virtual reality technology essentially means that it is not preformed but generative, not dependent but created, and the "conception" is to express this temperament of the technology. If the immersion is the foundation that makes the person has real sense and acquires experience, the interactivity is the key that realizes man-machine harmony, so, the conception is the foundation that assists the human to carry on the creative thinking.

In 1965, Americans e Sutherland, titled "the ultimate show" first put forward in the paper including has interactive graphics display, force feedback device, and the voice prompt, the basic idea of virtual reality system was later recognized as to play the role of a milestone in the field of virtual environment.

In the 1980s, American jay officially proposed the word "Virtual Reality". NASA and the us department of defense have organized a series of research on virtual reality technology and achieved remarkable results, which has aroused widespread attention to virtual reality technology.

In the 1990s, the rapidly developing computer hardware technology was matched with the continuously improved computer software system, which made the real-time animation production of sound and image based on large data sets possible. The design of human-computer interaction system keeps innovating, and the new and practical input and output equipment keeps entering the market. The design of human-computer interaction system is also in constant innovation, which lays a good foundation for the development of virtual reality system. The success of designing a Boeing 777 using virtual reality technology is another great achievement in recent years. People are full of hope and interest for the rapid development of virtual reality system.

VRML is a standard for describing scenes in a virtual environment, and it can be used to build an interactive 3d multimedia realm on the INTERNET. The basic characteristics of VRML, including distributed interactive, platform independent, three-dimensional, media integration, more vivid natural, etc., known as "the second generation of the WEB", its application scope is quite widespread, including scientific research, teaching, engineering, architecture, business, entertainment, advertising, e-commerce, etc., has been more and more attention by people, the international organization for standardization in January 1998 formally approved it to international standards.

VRML is a modeling language whose basic goal is to build interactive three-dimensional multimedia on the Internet. In other words, it is used to describe three-dimensional objects and their behaviors. It can build virtual World with its basic features including distributed, three-dimensional, interactive, multimedia integration, and realistic state. The advent of VRML has brought virtual reality into our lives like multimedia and the Internet. Simply put, the VRML based second generation WWW= multimedia + virtual reality +Internet.

People familiar with WWW know that, due to the limitations of HTML language, web pages before VRML can only be a simple plane structure. Even if the Java language can add a lot to WWW, it is only in the stage of graphic design, and the realization of dynamic interaction between the environment and participants is very cumbersome. VRML was born. The first generation Web is a 2d browsing technology with HTML as the core, while the second generation Web is a 3d browsing technology with VRML as the core. The second generation Web organically combined VRML with HTML, Java, media information flow and other technologies to form a new 3d hypermedia Web.

The first generation of WWW is a kind of media with access to documents, which can provide the experience of reading, making it easy for people who are familiar with the style of Windows to use the Internet. The second generation of WWW with VRML as the core will make users feel as if they are in the real world, and freely explore the enormous information resources on the Internet in a three-dimensional environment. Everyone can enter the virtual world from different routes and interact with virtual objects. In this way, it is no longer the computer that controls feelings, but the user himself. People can visit various places in the customary natural way and "directly" talk and interact in the virtual community. A quote from Anthony Dee from the department of digital design at Parsons represents the mood of VRML enthusiasts: "it's so tempting to put a 3d immersive virtual environment on the WWW that no one wants to try it out." More importantly, although the need for creating complex boundary deep grasp of VRML, and often also need help to create software and other software to assist, but "learning VRML only need a limited space and has the ability of operating a text editor, create VRML realm of imagination is the most important skill", this is the root cause of the rapid development of VRML.

The emergence of VRML has brought virtual reality into our life like multimedia and Internet. To put it simply, the second generation world wide web based on VRML = multimedia + virtual reality + Internet. The first generation of the world wide web is a kind of media access to the document, can provide reading feeling, make people who familiar with Windows style of PC environment, easy to use the Internet and VRML is the core of the second generation of the world wide web users such as in the real world, at random in a 3 d environment to explore the incomparably huge information resources on the Internet. Everyone can enter the virtual world from different routes and interact with virtual objects. In this way, it is no longer the computer that controls feelings, but the user himself. People can visit various places in the customary natural way and "directly" talk and interact in the virtual community.

VRML was designed to start by viewing real-time 3D images on the WEB. The VRML browser is both a plug-in, a helper application, and a stand-alone application, a real-time 3D rendering engine that is also used in traditional virtual reality. This allows the VRML application to be separated from 3d modeling and animation applications, where the scene ahead can be colored in advance, but without the freedom to choose the direction. VRML provides 6+1 degree of freedom, allowing users to move in three directions or rotate in three directions, as well as establishing hyperlinks to other 3D Spaces. So VRML is hyperspace.

Virtual reality technology has been rapidly rising and developing at home and abroad. At present, many universities in China have begun the research of virtual reality technology. The research and application of virtual reality roaming system is one of the aspects. This paper discusses how to combine 3d modeling with VRML technology to build a simple model quickly and simply. Virtual building model scene roaming system is the combination of virtual building scene establishment technology and virtual tour technology. The former is the foundation and the latter is the system operation method. Because of the characteristics of virtual reality technology, it can permeate every corner of our work and life.

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