第34卷第2期 2004年4月 JOURNAL OF SHANDONG UNTVERSITY(ENGINEERING SCIENCE) 文章号:1672-3961(2004)02001804 虚拟现实中虚拟场景的建模技术 范波涛,贾雁2 山东大学机械工程学院山东济南20012.山东公安专科学校教务处,山东济南250100 擠要:虚拟场景建摸是虚拟現实技术中的关键技术之一,举例介绍分析了三种建模技术及其局限性;基于图形渲 染的建模技术充分利用计算帆围形学技术进行虚拟环境的建模和渲染,交互性强但计算量大,对硬件要求高;基 于图像的建模技术计算简草,真实感骚但交互性差;基于图形与围像的泥合建模技术結合以上两种建模技术的 优点既有真实感,又有交互性,但许多技术问题还待解决随着相关技术的发展,基于图形与图像的混合建模技 术在构造复杂场景中必将得到广泛的应用 关键词:基于图形渲染的建模;基于围像的建模;基于图形与图像的混合建模 中图分类号:TH122 文獻标识码:A Virtual scene modeling technology in virtual reality FAN Bo-tao, JIA Yan? (1. School of Mech., Eng, Shandong Univ, Jinan 250061, China; 2. Office of Education Administrator, Shandong Public Security College, Jinan 250101, China) Abstract: Virtual scene modeling is one of the key technologies in Virtual Reality. This paper illustrates three kinds of modeling technologies and analyzes their limitations. The graphics-based rendering modeling technolo- est of computer graphics'modeling and rendering technology to build virtual environment, which is characterized by great interactivity yet large amount of calculations requiring high capability of hardware: the image-based modeling technology needs simple calculations and strong feeling of reality, but the interactivity Dor. The hybrid modeling technology based on graphics and image combines the advantages of the two meth- ods. It has not only great interactivity but also third dimension, but there are many problems needing future solutions. Along with the development of relational technologies, the modeling technology based on graphi and image will be used widely in complex Key words: graphics-based rendering modeling; image-based modeling: modeling based on graphics and im- 觉听觉触觉等真实感觉形成的虚拟世界集多种 0引言 媒体的表现技术于一体,使用户可以在这样一种虚 拟环境中通过与计算机的交互感受真实的世界和活 虚拟现实技术是用计算机生成逼真的三维视动过程虚拟现实技术的基本特征可用3个I,即 作者筒介 190),男教授研究方向为工程图学及图学教育 万方数据第34卷 vol 34 第2期 No 2 山东大学学报(工学版) IOURNAL OF SHANDONG UNIVERSITY(ENGINEERING SCIENCE) 2004年4月 Apt．2004 文章编号：1672—3961(2004)024)0184)4 虚拟现实中虚拟场景的建模技术 范波涛1，贾雁2 (1山东大学机械工程学院，山东济南250061；2山东公安专科学校教务处。山东济南250100) 摘要：虚拟场景建模是虚拟现实技术中的关键技术之一，举例介绍分析了三种建模技术厦其局限性：基于图形渲 染的建模技术充分利用计算机图形学技术进行虚拟环境的建模和渲染，交互性强，但计算量大，对硬件要求高；基 于图像的建模技术计算简单，真实感强，但交互性差；基于图形与图像的混合建模技术蛄合以上两种建模技术的 优点，既有真实感，又有交互性，但许多技术问赶还待解决．随着相关技术的发展，基于图形与图像的混合建模技 术在构造复杂场景中必将得到广泛的应用． 关键词：基于图彤渲染的建模；基于图像的建模；基于图形与图像的混合建模 中圈分类号：THl22 文献标识码：A Virtual scene modeling technology in virtual reality FAN Bo．1a01，J认Yan2 (1．School of Mech．，EIlg．，Shandong Univ．，Jinan 250061，China； 2．Office of Education Administrator，Shandong Public Security College，Jinan 250101，China) Abstract：Virtual scene moiling is one of the key technologies in Virtual Reality．This paper illustrates three kinds of modeling technologies and analyzes their limitations．3'he graphics-based rendering modeling technolo￾gYmakes thebest ofcomputer磬ap}lics’modelingand砘Ⅲlefi皑technologytOhild virtual env／renment，which is characterized by great interactivity yet Ial学e amount of calculations re叩证llg hish capability of hardware；the ir”铲一based modeling technology needs simple calculations and fltlDl蟮feeling of reality，but the interactivity is poor．The hybad modeling technology based On graphics and image cxm出ines the advantages of the two meth￾ods．It has not only great interactivity hut also third dimension，hut there are many problems needing future solutions．Along with the develotmtnt of relational technalngies，the medeling tecbuology based on础池 and image will be used widely in complex Fmene． Key WOrdS：graphics—based rendering modeling；iITl噼-based modeling；modeling based Oil graphics and im￾age O 引言 虚拟现实技术是用计算机生成逼真的三维枧 收稿日期：2003-06-1I 作者筒介：范波涛(1950-)，男．教授．研究方向为工程图学及图学教育 觉、听觉、触觉等真实感觉形成的虚拟世界，集多种 媒体的表现技术于一体，使用户可以在这样一种虚 拟环境中通过与计算机的交互感受真实的世界和活 动过程“】．虚拟现实技术的基本特征可用3个I，即 万方数据