面向景观规划设计的数字地形交互式编辑技术

doi:10.3724/SP.J.1047.2012.00179

地球信息科学学报 ›› 2012, Vol. 14 ›› Issue (2): 179-186.doi: 10.3724/SP.J.1047.2012.00179

• 地球信息科学理论与方法 • 上一篇下一篇

面向景观规划设计的数字地形交互式编辑技术

李界光, 唐丽玉*, 陈崇成, 邹杰, 林定

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

收稿日期:2012-04-24 修回日期:2012-04-24 出版日期:2012-04-25 发布日期:2012-04-24
作者简介:李界光(1983),男,江西吉安市人,硕士研究生,研究方向为地学可视化与虚拟地理环境、数字地形、计算机图形学,Email:lijieguang2124@sina.com
基金资助:
国家自然科学基金项目(30972299,41001203);福建省自然科学基金项目(2010J01203; 2011J05108);欧盟第七框架项目(FP7-PEOPLE-2009-IRSES, No.247608)。

On Interactive Digital Terrain Editing for Landscape Planning & Design and Its Implementation

LI Jieguang, TANG Liyu, CHEN Chongcheng, ZOU Jie, LIN Ding

Key Laboratory of Spatial Data Mining & Information Sharing of MOE, Spatial Information Research Centre of Fujian, Fuzhou University, Fuzhou 350002, China

Received:2012-04-24 Revised:2012-04-24 Online:2012-04-25 Published:2012-04-24
Contact: 唐丽玉,副研究员,博士,主要从事地学可视化与虚拟地理环境、虚拟植物方面的研究。E-mail: tangly@fzu.edu.cn E-mail:tangly@fzu.edu.cn

摘要/Abstract

摘要： 数字地形编辑是虚拟地理环境、三维景观仿真系统中一个重要的研究内容,在城市与乡村、区域道路网、风景园林的数字化规划设计实践中具有重要价值。本文以规则格网的数字地形为研究对象,面向城市和园林景观规划设计中的实际应用,提出了交互式数字地形编辑的解决方案,重点给出了分页技术的地形交互式编辑具体过程和相关的主要实现技术。数字地形编辑的实现,首先,通过鼠标交互式操作,结合射线求交算法,在地形表面选取目标编辑区域;然后,结合夹角之和检测算法,获取区域下地形数据,设定新的地形高程值,最后,将编辑操作传输至地形其他层,更新整个地形,并在地形编辑后,采用方格网计算法,统计出区域下地形填挖方量。此外,在经过平整的地形区域,植入树和三维建筑模型,构建虚拟城镇小区景观。本文初步实现了编辑操作功能的计算机软件,并展示了数字地形编辑在城镇小区景观设计中的应用结果。试验表明,基于规则格网和分页技术的数字地形编辑方法具有算法简单、计算量小、易实现等特点。此外,通过鼠标交互式的操作,能够实时、直观地显示编辑结果,达到"所见即所得"的效果。

关键词: 数字地形, 规则格网, 分页技术, 交互式地形编辑, 景观规划设计

Abstract: Digital terrain editing is one of important research contents in virtual geographical environment and 3D landscape simulation system, which has significant value in digital design practices of city and country, road network, landscape planning, etc. In this article we took the digital terrain based on regular grid as research objectives, oriented to practical application of the city and landscape planning & design, and proposed an interactive digital terrain editing scheme. OpenSceneGraph uses the directed acyclic graph for managing the scene graph, level of detail (LOD) and pagination technique for real-time rendering. Specific processes and related major implementation technology of the terrain interactive editing based on pagination technology was described. Firstly, the target region was selected through the mouse interactive operation combined with ray intersection algorithms. Secondly, the grid data under the region was gotten in the basis of polygon angle sum algorithm. Lastly, the grid elevation of region was assigned a new elevation value by dragging of mouse in the vertical direction. Under the edited region, by the grid method that is used to calculate earthwork volume, it is calculated that the volume of the fills and the excavations. In addition, the trees models were loaded by modeling software of ParaTree, which is researched and developed by our group, and the three-dimensional architectural models were built by the 3DMAX. All the models were loaded into the virtual forest visualization system (VisForest). The virtual town/village landscape in the flattened region was constructed according to user's design idea. The editing function was preliminarily realized, which showed the results of application in urban residential landscape design. This study showed that the digital terrain editing based on regular grid and pagination technology has advantages of simple algorithm, small amount of calculation and easy to realize. What is more, mouse interactive operation can show the editing result in a real-time and intuitional way, and achieve the effect of "what you see is what you get".

Key words: digital terrain, regulation grid, pagination technology, interactive terrain editing, landscape planning and design

李界光, 唐丽玉*, 陈崇成, 邹杰, 林定. 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.DOI:10.3724/SP.J.1047.2012.00179

LI Jieguang, TANG Liyu, CHEN Chongcheng, ZOU Jie, LIN Ding. On Interactive Digital Terrain Editing for Landscape Planning & Design and Its Implementation[J]. , 2012, 14(2): 179-186.DOI:10.3724/SP.J.1047.2012.00179

参考文献

[1] Cao J, Peng X Bo. Research on the design and evaluation of signal coordination control system in urban main road. Proceedings of International Conference on Logistics Engineering and Intelligent Transportation Systems (LEITS). Wuhan, China: IEEE, 2010,1-3.
[2] Bauer O, Robert M. Road database design for velocity profile planning. Proceedings of International Conference on Control Applications. Frankfurt, Germany: IEEE, 2003,1356-1361.
[3] 杨昕, 汤国安, 刘学军,等. 数字地形分析的理论方法与应用[J]. 地理学报, 2009, 64(9): 1058-1070.
[4] 石松, 陈崇成, 王钦敏. 地物仿真及交互可视化编辑工具的设计与实现[J]. 系统仿真学报, 2006, 18(3): 659-684.
[5] Ujang M U, Abdul R A. 3d navigation system for virtual reality based on 3d game engine. Proceedings of International Conference on the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Beijing, China, 2008,513-518.
[6] Busby J, Parrish Z, Wilson Jeff. Mastering unreal technology: Introduction to level design with unreal engine 3[M]. Sams Publishing, 2009.
[7] Atlan S, Garland M. Interactive multiresolution editing and display of large terrains. Proceedings of Computer Graphics, Wiley Online Library, 2006,211-223.
[8] 王锐, 钱学雷. Openscenegraph三维渲染引擎设计与实践[M]. 北京:清华大学出版社, 2009.
[9] Zhou H, Sun J, Turk G. Terrain synthesis from digital elevation models[J]. IEEE Visualization and Computer Graphics, 2007, 13(4): 834-848.
[10] Strugar F. Continuous distance-dependent level of detail for rendering heightmaps[J]. Journal of Graphics, Gpu, and Game Tools, 2009, 14(4): 57-74.
[11] Duchaineau M, Wolinsky M, Aldrich Charles, et al. Roaming terrain: Real-time optimally adapting meshes. Proceedings of International Conference on Visualization '97, Proceedings. Phoenix, AZ, USA, USA IEEE, 1997,81-88.
[12] Hoppe H. Smooth view-dependent level-of-detail control and its application to terrain rendering. Proceedings of International Conference on Visualization '98 Proceedings. Research Triangle Park,NC,USA IEEE, 1998,35-42.
[13] Losasso F, Hoppe H. Geometry clipmaps: Terrain rendering using nested regular grids. Proceedings of International Conference on ACM Transactions on Graphics (TOG). New York, USA: ACM, 2004,769-776.
[14] Lindstrom P, Pascucci V. Terrain simplification simplified: A general framework for view-dependent out-of\\core visualization[J]. Visualization and Computer Graphics, IEEE Transactions on, 2002, 8(3): 239-254.
[15] 唐勇, 郭栋梁, 吕梦雅. 视点相关的大规模地形内外存调度算法的研究[J]. 系统仿真学报, 2009, 21(8): 2424-2427.
[16] Goswami P, Makhinya M, Bsch J, et al. Scalable parallel out-of-core terrain rendering. Proceedings of International Conference on Eurographics Symposium on Parallel Graphics and Visualization. Norrk?ping, Schweden, 2010,63-71.
[17] 杨旭东, 皮学贤, 李思昆. 基于瓦片四叉树和概要金字塔的地形数据组织与高性能调度[J]. 计算机研究与发展, 2005, 42(增刊): 69-73.
[18] 曹启华, 邓雪情. 基于金字塔模型的规则格网数据可视化交互式编辑[J]. 测绘科学技术学报, 2007, 24(6): 427-431.
[19] Li D, Hu Y S, Meng D Y, et al. The research and implementation of interactive terrain editing and crack elimination. Proceedings of International Conference on Computational Intelligence and Software Engineering. Wuhan, China: IEEE, 2009,1-4.
[20] 汤国安, 刘学军, 房亮, 等. Dem及数字地形分析中尺度问题研究综述[J]. 武汉大学学报(信息科学版), 2006, 31(12): 1059-1066.
[21] Tang L Y, Chen C C, Zou J, et al. OntoPlant: an integrated virtual plant software package for different scale application. Proceedings of 2011 IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services (ICSDM2011) in conjunction with Eighth Beijing International Workshop on Geographical Information Science (BJ-IWGIS 2011), Fuzhou,China: IEEE, 2011, 308-314.

面向景观规划设计的数字地形交互式编辑技术

On Interactive Digital Terrain Editing for Landscape Planning & Design and Its Implementation

PDF (PC)

赞

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 12

Metrics

本文评价

推荐阅读 0

[1]	陶宇, 王春, 徐燕, 张光祖, 宋素素, 杨维. DEM建模视角下的城市道路分类与表达[J]. 地球信息科学学报, 2020, 22(8): 1589-1596.
[2]	秦承志. 数字地形分析方法研究的维度——精准、高效、易用[J]. 地球信息科学学报, 2020, 22(4): 720-730.
[3]	熊礼阳, 汤国安. 黄土高原沟谷地貌发育演化研究进展与展望[J]. 地球信息科学学报, 2020, 22(4): 816-826.
[4]	蔡顺, 耿豪鹏, 郑炜珊, 潘保田. 基于傅里叶变换的谷间距特征信息提取及其影响因素研究[J]. 地球信息科学学报, 2020, 22(3): 399-409.
[5]	黄楠, 杨昕, 刘海龙. 基于等高线空间关系的鞍部点提取方法[J]. 地球信息科学学报, 2020, 22(3): 410-421.
[6]	雷雪, 周毅, 李阳, 王泽涛. 基于DEM的黄土地貌逼近度因子构建及特征分析[J]. 地球信息科学学报, 2020, 22(3): 431-441.
[7]	江岭, 凌德泉, 赵明伟, 王春, 曾微波. 顾及多分析尺度的地形部位面向对象分类方法[J]. 地球信息科学学报, 2018, 20(3): 281-290.
[8]	刘凯, 汤国安, 黄骁力, 蒋圣. 面向地形特征的DEM与影像纹理差异分析[J]. 地球信息科学学报, 2016, 18(3): 386-395.
[9]	谢轶群, 朱红春, 汤国安, 曾瑞安. 基于DEM的沟谷特征点提取与分析[J]. 地球信息科学学报, 2013, 15(1): 61-67.
[10]	江岭, 汤国安, 刘凯, 宋效东, 阳建逸, 张刚. 局部型地形因子并行计算方法研究[J]. 地球信息科学学报, 2012, 14(6): 761-767.
[11]	秦承志, 卢岩君, 包黎莉, 朱阿兴, 邱维理, 程维明. 简化数字地形分析软件(SimDTA)及其应用——以嫩江流域鹤山农场区的坡位模糊分类为例[J]. 地球信息科学学报, 2009, 11(6): 737-743.
[12]	李石华, 王金亮. 高黎贡山北段羚牛生境DTM数据分析与评价应用[J]. 地球信息科学学报, 2006, 8(4): 84-87,100,6.