On the Development of Three Dimensional Direct Modeling System to Support Excavation Studies of City Remains

1.研究目标和方法：本研究项目旨在开发三维计算机图形系统，既支持城市遗址的发掘工作，又支持其场外的分析研究。在一个案例研究中对开发的系统进行了测试，本文回顾了系统引入对挖掘研究的影响。研究结果：在埃及al-Tur遗址的挖掘研究中开发并测试了三个子系统。(1)场地系统：该系统每天在光电测量工具完成三维测量工作后不久，生成场地的平面图、剖面图和鸟瞰图像S。很明显，系统生成的图纸和图像将帮助研究人员轻松地了解挖掘出的遗骸的空间形态。(2)实验室系统：该系统具有构建建筑元素、层和文物如何位于地面中的三维表面模型的功能。这些cg模型可以用于bo…。进一步跟踪挖掘过程，解剖分析各要素之间的空间关系。对建筑构件照片图像数据纹理映射技术的介绍表明，这将有助于研究人员分析这些构件表面呈现的详细信息。(3)照片检索系统：它允许研究人员检索挖掘工作期间拍摄的建筑构件和文物的照片，以及文物分类工作后与挖掘现场位置和挖掘步骤的关系，只需通过显示的图像与系统进行交流。该系统还可以实现对现场开挖过程的跟踪。结论：如何记录和提供足够多的遗骸数据给那些没有参与工作的人，一直是研究人员面临的一个严重问题。这项研究表明，与传统挖掘研究的最终输出的二维文档相比，所开发的系统可以作为解决这一问题的最有效手段。较少

1. Objectives and Method: This research project aims to develop three dimensional computer graphic system to support, both excavation works of a city remains on the site, and its analytical studies at off the site. Testing the developed system in a case study, this paper reviewed an impact of system introduction to excavation studies.2. Results of Research: Three sub-systems have been developed and tested in the excavation studies at the al-Tur site, in Egypt. (1) Site System: the system generates plans, sections, and birds-eye view image s of the site, everyday, soon after three dimensional survey works with an opt-electronic survey tool are finished. It became clear that system generated drawings and images will help researchers understanding spatial configuration of excavated remains, easily.(2) Laboratory System: the system has an utility to build three dimensional surface models of how building elements, layers, and relics were located in the ground. Those CG models can be used bo … More th to trace process of excavation works, and to anatomically analyze spatial relation-ships among each element. An introduction of technique to texture map photo image data of building elements showed that it will help for researchers to analyze detailed information presented on the surfaces of those elements.(3) Photograph Retrieval System: it allows researchers retrieve photographs of building elements and relics that were taken during the excavation work, and after relics classifying works, in relation to the place of the excavation site, and to the step of excavation, simply communicating the system through displayed images. This sub-system also can be used to trace the process of excavation off the site.3. Conclusion: It has been a serious problem for researchers how to record and present enough data of remains excavated to those who did not participate in the work. This study has showed that the developed system can be used as far effective means to solve such problem, comparing to two dimensional documents that have been final output of conventional excavation studies. Less