摘要：
小尺度地质体的三维建模是地质学研究的一个新课题。运用虚拟现实技术，把表面特征建模和实体结构建模相结合，从技术特点与实践应用两方面着手，介绍了小尺度地质体三维建模的思想和方法；对小尺度三维地质体模型的动态切割算法的思路与实现过程进行了详细的描述。并以遗迹化石Chondrites和岩心的三维建模为实例，利用VRML（虚拟现实建模语言）提供的造型shape节点把理论和实践相结合，建立了它们的三维模型；依靠VRML提供的Script节点、传感器节点以及事件路由器，结合Javascript编程实现了小尺度地质体三维模型的动态切割和模型空间信息与属性信息的集成。最后，利用Visual Basic+Cortona 组件开发了三维地质体模型的浏览平台，实现了小尺度地质体模型的浏览和查询，为小尺度地质体三维建模研究提供了一种新的技术手段，也为虚拟现实技术在地质学中的应用开拓了新的领域。
Abstract:
3D modeling on smallscale geologic body is a new theme of geology. In this paper，the concepts and methods of 3D modeling on smallscale geologic body are introduced according to technical characters and practical application.The VRML(Virtual Reality Modeling Language) technique was used by combing the surface feature modeling and entity architecture modeling. The algorithm thought and realization process of dynamic concision for 3D geologic body are briefly described. Taking the 3D modeling on the trace fossil Chondrites and the drilling core as an example，combining theory and practice based on the “shape” model provided by VRML，their 3D models are established. The dynamic concision and the integration of spatial information and feature information of the smallscale geologic body were achieved by the VRML nodes “script”，“touchsensor”，“Route” and Javascript programe. Finally，the authors developed a browser platform to browser the 3D model based on Visual Basic+Cortona component，which completes the viewing and querying of the 3D model. This paper also provides a new technical method for studies of 3D modeling on the smallscale geologic body and extends the new application area for VRML technique in geology.
牛永斌 钟建华 胡 斌. 小尺度地质体三维建模研究——以遗迹化石Chondrites和岩心三维建模为例[J]. 古地理学报, 2008, 10(2): 207-214.
Niu Yongbin Zhong Jianhua Hu Bin. Research of 3D modeling on smallscale geologic body——Taking 3D modeling on trace fossil Chondrites and drilling core as an example[J]. JOURNAL OF PALAEOGEOGRAPHY, 2008, 10(2): 207-214.