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三维地质模型可视化中直接三维交互的实现 总被引:16,自引:1,他引:16
人机交互是可视化系统中不可缺少的组成部分,三维交互的技术关键是建立屏幕二维坐标与三维空间坐标的对应关系.基于改进三棱柱3D地质模型,在其可视化过程中采用几何变换方法,并借鉴OpenGL的选择、反馈等技术,实现了矿床地质模型的直接三维交互操作,提高了3D地质建模软件的易用性与灵活性. 相似文献
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宋哲琛 《浙江水利水电专科学校学报》2008,20(1):73-76
论述了体视化的基本原理和方法,针对地质模型与地质数据的特点,对原有体视化方法进行了简化和改进,提高了模型重构的速度;对体视化中用到的三维人机交互问题进行了研究,提出了一些关键问题的解决方案,实现了三维仿真环境中基本的人机交互功能,提高了系统的易用性和灵活性,并以武汉程潮铁矿为例,对系统进行了验证,取得了良好的效果. 相似文献
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在我国城镇化快速进程中,垃圾填埋场数量激增,伴随而来的渗漏污染事件频频发生,对人们生存环境造成了严重的威胁,制约了城市发展.本次研究通过在四川省某垃圾填埋场开展的高密度电阻率法调查,归纳总结出了垃圾场主断面上电阻率异常特征,再结合地质、钻孔资料综合解释验证,应用三维可视化分析技术,查明了垃圾场原址边界范围和垃圾场底部地... 相似文献
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基于钻井资料的三维地质建模技术,通过在留楚油田建立精细的三维地质模型,使油藏研究达
到较高的精确性。在建模过程中,将三维建模软件特有的技术手段与基础地质研究相结合,在构造精细
落实、地层精细对比等基础地质研究方面发挥重要作用,解决了许多通过常规方法难以解决的问题。精
细地质模型在C2020井开发措施调整及C2945井注采关系分析等方面取得了良好的效果。由于三
维地质模型是地质体的一种数字化表述,因此,它还在数字化油藏方面起到了重要作用。 相似文献
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由于三维可视化显示技术的复杂性和任意形状、多个沉积层模型三维正演计算的复杂性,目前国内外大多采用2.8D模型。本文根据南方海相油气勘探的实际情况,编制了基于8D模型的可视化重震交互反演系统。通过理论模型的验证,对实际资料处理结果的对比,8D重震联合反演克服了2D或2.8D模型难以模拟复杂地质构造带的问题,较好地解决了海相地区地震资料品质差、信噪比低导致地震解释模糊甚至无法给出解释的困难,取得了明显的地质解释效果。 相似文献
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ZHU Liang-feng HE Zheng PAN Xin WU Xin-cai 《中国矿业大学学报(英文版)》2006,16(4):461-465
3D geological modeling, one of the most important applications in geosciences of 3D GIS, forms the basis and is a prerequisite for visualized representation and analysis of 3D geological data. Computer modeling of geological faults in 3D is currently a topical research area. Structural modeling techniques of complex geological entities containing reverse faults are discussed and a series of approaches are proposed. The geological concepts involved in computer modeling and visualization of geological fault in 3D are explained, the type of data of geological faults based on geological exploration is analyzed, and a normative database format for geological faults is designed. Two kinds of modeling approaches for faults are compared: a modeling technique of faults based on stratum recovery and a modeling technique of faults based on interpolation in subareas. A novel approach, called the Unified Modeling Technique for stratum and fault, is presented to solve the puzzling problems of reverse faults, syn-sedimentary faults and faults terminated within geological models. A case study of a fault model of bed rock in the Beijing Olympic Green District is presented in order to show the practical result of this method. The principle and the process of computer modeling of geological faults in 3D are discussed and a series of applied technical proposals established. It strengthens our profound comprehension of geological phenomena and the modeling approach, and establishes the basic techniques of 3D geological modeling for practical applications in the field of geosciences. 相似文献
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FDM3D打印机以其成本优势一直受到各行业的欢迎,但是也由于其打印精度不高而带来诸多问题。本文设计出了一款以Core XY结构为打印行走平台的桌面级FDM3D打印机,该打印机打印空间利用率更高,行走平台结构更为轻巧,减去了X轴步进电机的质量,从而极大解决了打印过程中大惯性所带来的问题,面对细小部位打印能够更加精细,进而提升打印的成型精度。 相似文献
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Regional Geological Information System combines the multi-dimensional and dynamic spatial information into an integrated spatial information system. 3D geological modeling and its preprocessing or post-processing are the most difficult problems for constructing the system. Based on the current 3D GIS technique, some basic problems in establishing the system are discussed in this paper, including 3D spatial data model, 3D geological modeling, and visualization of 3D geological data. A kind of 3D vector data model based on boundary representation for geological object and its topology was developed in order to model and visualize complex geological structures. In addition, some key techniques are pointed out for further study. 相似文献
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三维地质建模软件是计算机技术在地质中应用的重点和发展方向,它将大量地质资料和地质人员分析判断结果抽象为可视化的地质模型,使复杂的空间关系可视化,通过对模型的旋转,从不同的角度观看模型,形象直观,它充分利用计算机管理和分析的手段,将数据的输入、规模指数的计算、模型测算、成果输出综合为一个数据流,实现了全数字化信息处理,为快速、有效、准确地进行水利水电工程提供良好的现代化工具。本文以GeoEngine软件为建模工具,介绍了三维地质建模的过程以及模型的可视化方法。 相似文献
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ZHOU Ye LIN Ge GONG Fa-xiong LIU Shi-lin Liu Ya-chuan 《中国矿业大学学报(英文版)》2006,16(1):77-81
3D visualization is one of major problems in "Digital Mine" theory and its technological research field. Through the observation of 3D geological models, spatial structural information, connected with the information of production management hidden in geological data, could be detected. In order to meet the requirement of more efficient coal exploration, a case study of geological characters of the Daliuta Coal Mine is presented in which 3D visual models of the ground surface and geologic bodies are established on the basis of data models and data structures of 3D geology modeling. The main conclusions of this study are as follows: (1) Through analysis and organization of spatial discrete data, the drillhole database is designed with the data of the Daliuta mine; the connections amomg drillhole data are realized and displayed in a 3D environment. (2) Combining real data of the Daliuta mine, drillhole visualization is realized in a 3D environment by using the CoalMiner system. (3) The ground surface modeling of the Daliuta coal mine adopted a surface-data model and a TIN data structure. (4) 3D models of coal seams and rock formations of the Daliuta mine are established, which provide a method for the simulation of complex surfaces of geologic bodies. In the end, the models are applied to the Daliuta coal mine and the result shows that better geological effects are obtained. 相似文献
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Over the past decade,robots have been appearingin the operating rooms.With the robotic system assis-tance,operations have become lesser invasion.Roboticsurgery requires the use of computer imaging to diag-nose and perform the operation.A three dimension(3… 相似文献
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交互式三维场景生成技术的研究与实现 总被引:1,自引:2,他引:1
介绍了如何将OpenGL提供的底层功能与面向对象的程序设计思想相结合进行交互式三维图形系统的设计过程,研究了以下几方面内容,(1)三维参数化建模的实现;(2)三维过程的连续显示的问题;(3)三维图形交互功能的实现,并取得了满意的效果。 相似文献
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研究面向变电站营运管理的三维虚拟数字可视化系统,将三维虚拟和数字可视化技术与变电站现有系统与信息集成起来,包括PMIS系统、实时监控系统、实时视频监控系统、火灾报警系统、安全防护系统等,实现变电站各种信息的一体化多维展示,解决目前变电站各种系统以二维方式离散展示信息的缺陷,提高变电站的运行管理与监控水平. 相似文献
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基于TIN不连续地质体的三维构模及动态显示 总被引:9,自引:0,他引:9
讨论了 MGIS中与煤矿地质信息相适应的三维地层数据库管理系统 ;给出了用于煤矿中不连续地质体三维构模的 TIN的生成及其动态修改算法 ;介绍了三维地质仿真系统的组成及其功能 相似文献
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本文利用普通数码影像,基于Lensphoto数字近景摄影测量系统,对吉林建筑大学校内边坡进行信息采集和三维基于近景摄影测量方法建立的边坡三维模型效果良好,为获取边坡三维信息提供了一种快速可行的方法. 相似文献
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基于VRML的道路三维虚拟景观构建 总被引:3,自引:0,他引:3
道路地理信息的三维可视化一直以来是研究的热点.选用VRML为开发平台来构建基于互联网的道路三维虚拟景观.对构建的流程和关键技术进行了详细的阐述,并研究设计出一种C/S模式下构建道路三维虚拟景观发布系统的方法. 相似文献
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结合目前电法勘探数据成图及二维解释的特点及存在的局限性,研究了OpenGL和VC++2005联合编程,结合二维剖面数据特点,研制了基于OpenGL的电法数据三维可视化系统Geo3DVis。Geo3DVis的基本功能包括工区建立、二维解释、三维显示;实现了对二维剖面数据的动态放大、缩小、平移等交互操作。将Geo3DVis应用于实际二维物探数据资料解释,取得了良好的地质效果。 相似文献