一种单机多屏的时序三维地理场景同步可视化系统

doi:10.3724/SP.J.1047.2013.00200

地球信息科学学报 ›› 2013, Vol. 15 ›› Issue (2): 200-208.doi: 10.3724/SP.J.1047.2013.00200

• 地理信息系统平台开发 • 上一篇下一篇

一种单机多屏的时序三维地理场景同步可视化系统

杜云虎¹, 陈崇成¹, 唐丽玉¹, 李界光²

1. 福州大学福建省空间信息工程研究中心数据挖掘与信息共享教育部重点实验室, 福州350002;
2. 福州林景行信息技术有限公司, 福州350002

收稿日期:2012-11-13 修回日期:2013-01-22 出版日期:2013-04-25 发布日期:2013-04-18
通讯作者: 陈崇成(1968-),男,福建闽清人,博士,教授,研究方向为地学可视化与虚拟地理环境、空间数据挖掘与地理知识服务。E-mail:chencc@fzu.edu.cn E-mail:chencc@fzu.edu.cn
作者简介:杜云虎(1988-),男,河南内乡人,硕士研究生,研究方向为虚拟地理环境与数字区域模型。E-mail:duyunhu880101@163.com
基金资助:
国家“863”计划课题(2012AA102002);国家自然科学基金项目(30972299,41001203,31200430);福建省产学研重大项目(2012N5006);福建省自然科学基金项目(2012J0505)。

A New Synchronous Visualization System for Time-sequential 3D Geographical Scene Display on a Computer with Multiple Screens

DU Yunhu¹, CHEN Chongcheng¹, TANG Liyu¹, LI Jieguang²

1. Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education, Spatial Information Research Centre of Fujian, Fuzhou University, Fuzhou 350002, China;
2. Fuzhou Silviscene Information Technology Co. Ltd, Fuzhou 350002, China

Received:2012-11-13 Revised:2013-01-22 Online:2013-04-25 Published:2013-04-18

摘要/Abstract

摘要：

三维地理场景的可视化是虚拟地理环境研究中展示各类复杂地学过程与现象的重要技术。目前,现实中地理场景大多具有复杂度高、规模大、交互性强等特点, 故采用传统的单个计算机单屏显示方式, 已无法满足用户对沉浸感、大视野、高分辨率的可视化应用需求, 而多屏显示技术是一个解决该问题的有效途径。本文以福建长汀县水土流失治理过程中植被覆盖变化为例, 开展了时序三维地理场景的单机多屏同步可视化技术和漫游系统研究。提出了系统的软件架构和开发流程, 并引入多线程同步机制, 实现了三视图场景的构建、三屏同步显示、三屏同步路径漫游、矢量图的差异符号化和三维场景实景图片嵌入播放等技术, 设计并实现了一个以单个计算机控制三个显示屏幕的时序同步可视化漫游系统。采用3 个时相的彩色遥感卫星影像,叠加数字高程模型形成反映不同时期水土流失程度变化的三维地理场景, 在水土流失治理过程成果展示中得到了应用。系统除了三维场景沉浸感强、震撼力大之外, 还具有动态变化、信息量大、表现力强等特点, 在地理场景动态可视化方面有独特的应用前景。

关键词: 虚拟地理环境, 同步可视化, 三维地理场景, 水土流失, 单机多屏

Abstract:

Three-dimensional (3D) visualization of geographical scene is an important technique in Virtual Geographical Environment (VGE) research for a broad variety of complex natural phenomena and geographical processes. Because geographical scenes are in general highly complex, large scale and with strong interactivity features, traditional single computer single-screen display method usually fails to meet the application requirements of user immersion, large field of view, and high-resolution visualization. Multi-screen display technique is an effective way to solve this problem. In the human-computer interaction of 3D geographical scenes visualization, in addition to supporting to control by hand through the input of keyboard, the system also supports automatically roaming along the path designed in advance. The path for automatically roaming is generated by Cardinal interpolation method which have some advantages: setting simply, good shape retention, and roaming smoothly. In this paper, a new synchronous visualization technique and system for time-sequential 3D geographical scenes displaying and roaming is introduced. The system is based on a stand-alone computer with multi-screens, using vegetation cover changes prior to, during and after the soil erosion control in Changting County, Fujian Province as an example. The software architecture, implementation techniques such as scene construction with three viewports, synchronous display and synchronous route roaming with three screens, vector layer symbolization, embedded broadcasting real-world scene pictures of 3D scene are discussed; thread synchronization mechanism is introduced; a 3D geographical scene was constructed to reflect the changes of soil erosion extent at three different time periods by overlaying true color remote sensing satellite images and DEM. This system has been used for showing the achievement of soil erosion control, and the effect sounds good. In addition to providing a strong immersion and big impact environment, the system also features dynamic change, enormous information, and strong expression. It has unique application capability for visualizing dynamic geographical scene. Last, these function modules are integrated in the 3D information system for synthetizing and management of virtual forest landscape (VisForest) which was designed and developed by research group coming from Spatial Information Research Centre of Fujian.

Key words: stand-alone with multi-screens, soil erosion, 3D geographical scene, virtual geographic environment, synchronous visualization

杜云虎, 陈崇成, 唐丽玉, 李界光. 一种单机多屏的时序三维地理场景同步可视化系统[J]. 地球信息科学学报, 2013, 15(2): 200-208.DOI:10.3724/SP.J.1047.2013.00200

DU Yun-Hu, CHEN Chong-Cheng, TANG Li-Yu, LI Jie-Guang. A New Synchronous Visualization System for Time-sequential 3D Geographical Scene Display on a Computer with Multiple Screens[J]. , 2013, 15(2): 200-208.DOI:10.3724/SP.J.1047.2013.00200

参考文献

[1] 林晖,黄凤茹,闾国年.虚拟地理环境研究的兴起与实验地理学新方向[J].地理学报,2009,64(1):7-20.

[2] 唐卫,闾国年,温永宁,等.面向虚拟地理环境的图形化地理建模与应用[J].地球信息科学,2007,9(2):78-84.

[3] Lin H, Huang F R, Lu X J, et al. Preliminary study on virtualgeographic environment cognition and representation[J]. Journal of Remote Sensing, 2010, 14(4): 822-838.

[4] Chen M, Sheng Y H,Wen Y N, et al. Virtual geographic environmentsoriented 3D visualization system[J]. Journal ofSystem Simulation, 2008,20(19):5105-5108.

[5] Liu Z, Shi J Y. DPGL: The Direct3D9-based parallel graphicslibrary for multi-display environment[J]. InternationalJournal of Automation and Computing, 2007,4(1):30-37.

[6] 胡平平.多屏同步三维显示技术的研究和实现[D].北京:中国电力科学研究院,2010.

[7] 林刚,张锋,张登福.多屏显示技术及其在图像处理系统中的应用[J].计算机应用研究,2002(4):154-157.

[8] 杜君,周深根.基于Virtools 的三维图形多屏显示技术研究[C].图像图形技术与应用进展:第三届图像图形技术与应用学术会议论文集,北京,2008,111-115.

[9] 侯洪涛,朱一凡,韦庆, 等.基于PC集群的多屏无缝拼接技术研究[J].计算机仿真,2006,23(11):202-205.

[10] 田战省,张群飞,万青.计算机多屏显示技术及其实现[J].微计算机应用,1994,15(6):7-9.

[11] 李蔚,吴帆,王峰.电厂辅助系统集中监控的单机四画面显示技术[J].自动化仪表,2006,27(11):60-62.

[12] 朱全胜,赵贺,刘娆, 等.关联多屏显示及其在电力系统中应用[J].大连理工大学学报,2008,48(5):744-748.

[13] Chen H, Chen Y Q, A. Finkelstein, et al. Data distributionstrategies for high-resolution displays[J]. Computers andGraphics, 2001,25(5):811-818.

[14] Ni T, Schmidt G S, Staadt O G, et al. A survey of largehigh-resolution display technologies, techniques, and applications[C]. 2006 IEEE Virtual Reality Conference, Alexandria,VA, USA,2006.

[15] 彭国均,池天河,唐丽玉,等.数字城市的三维图形构建技术[J].地球信息科学,2003(1):84-89.

[16] 李界光,唐丽玉,陈崇成,等.面向景观规划设计的数字地形交互式编辑技术[J].地球信息科学学报,2012,14(2):179-186.

[17] Su T. A multi-display collaborative urban planning systemwith a federated architecture[D]. Hangzhou: ZhejiangUniversity,2009.

[18] 许文强,唐丽玉,陈崇成,等.森林景观模拟与管理信息系统的设计与实现[J].中国农业科技导报,2009(5):83-89.

[19] 尚建嘎,刘修国,郑坤.三维场景交互漫游的研究与实现[J].计算机工程,2003,29(2):61-62.

[20] 刘惠义.虚拟视景交互漫游过程中视点的运动控制方法[J].河海大学学报,2004,32(6):693-695.

[21] MutiGen-Paradigm Inc. Vega Programmers Guide [CD].2002:11.

[22] 关治,陆金甫.数值分析基础[M].北京:高等教育出版社,1998.

[23] 罗立宏,张群英,冯开平,等.基于Cardinal 的虚拟场景自动漫游算法[J].桂林工学院学报,2007,27(2):278-281.

[24] Hearn D, Baker M P, 蔡士杰译.计算机图形学(第2 版)[M].北京:电子工业出版社,2002.

[25] 肖鹏,刘更代,徐明亮. OpenSceneGraph 三维渲染引擎编程指南[M].北京:清华大学出版社,2010.

[26] 林定,陈崇成,唐丽玉,等.基于颜色编码的虚拟树木交互式修剪技术及其实现[J].计算机辅助设计与图形学学报,2011,11(23):1799-1807.

[27] 林定,陈崇成,唐丽玉,等.基于参数曲线及其所围面积的三维树木建模[J].福州大学学报(自然科学版),2011,39(3):367-374.

[28] Tang L Y, Chen C C, Zou J, et al. OntoPlant: An integratedvirtual plant software package for different scale applications[C]. // Leung Yee et al. Proc. of Int. Conf. Spatial Data Mining and Geographical Knowledge Services (ICSDM2011)in conjunction with Eighth Beijing Int. Workshopon Geog. Information Science (BJ-IWGIS 2011).Fuzhou, China, IEEE, 2011,308-314.

一种单机多屏的时序三维地理场景同步可视化系统

A New Synchronous Visualization System for Time-sequential 3D Geographical Scene Display on a Computer with Multiple Screens

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