标题: | 虚拟红毛城:以保存为导向的数位化与虚拟化流程初探 Virtual Fort San Domingo: A Preliminary Process of Digital and Virtual Preservation |
作者: | 陈圣智 Sheng-Chih Chen 刘育东 Yu-Tung Liu 土木工程学系 |
关键字: | 古迹保存;虚拟实境;空间模拟器;数位保存;色彩校正;数位遗产;Historic Preservation;Virtual Reality;CAVE;Digital Preservation;Color Calibration;Digital Heritage |
公开日期: | 2007 |
摘要: | 数位科技与人文领域的结合应用与呈现,不但可将历史考据、文献调查整合,并将推论结果视觉化纪录外,更可保留当时所可能运用的材料工法、颜色风格等历史资讯。本论文以台北县淡水一级古迹红毛城周边地区等资料做为研究的历史城市空间,将其所负载之历史讯息及意义,透过文字与图面资料的分析与整理,建立历史空间之数位化档案。红毛城虚拟实境空间模拟器,基于1983年的实体复原测绘报告;2005、2006年的历史建筑与城区数位媒材资料调查分析;2005与2007年红毛城古迹研究报告,并辅以红毛城相关研究与文献资料佐证,透过实地进行数位摄影,考证比对相关时空转换下的空间脉络与建筑结构,将精准量测的平面图,经由电脑技术转换为3D立体模型的方式,达到准确度的要求。历史建筑外貌其量体外观以材质贴图呈现,需检视影像色彩与实景的真实性,经由影像处理与色彩校正机制的实验与测试,放置于操作虚拟实境空间模拟器的数位化与虚拟化流程,可做为保存古迹与历史建筑的数位化典藏与保存科学保存管理的可行方法。 数位化保存之精义在于永久保存,在古迹与历史建筑保存与修复的范畴中,真实性的评估考据是首要的条件。关于真实性复制的议题,色彩校正能呈现数位化原件的色彩,对色彩的认知,被视为感官表达的范围,本研究透过数位科技用数值化的分析,以真实的复制为需求将其定位。在数位化的操作过程中,结合色彩校正的步骤与影像转换的基础概念,确保色彩品质达到一定的准确度,并提出检测方法不同于现今色彩导表的操作,主要建立在虚拟历史空间环境下的保存应用方式。 古迹与历史建筑数位化与虚拟化的操作流程,将保存的概念加入,模拟出3D的立体展示空间、使用3D建模与互动软体等制作呈现、沉浸式虚拟实境的技术、即时的视觉呈现效果,提升模拟的精致度、互动性以达到真实性考证的需求。与过去的成果相较之下,加入了互动与多媒体等数位科技的要素,可自由浏览建筑结构、外观,更可以利用摇杆拉近视野,仔细观看各个角落。本论文透过数位化的概念与技术,将古迹史料整合科技来达到保存与资讯交流之用途,数位化、资料的视觉化以及空间虚拟化与互动的技术,使用虚拟实境空间模拟器(Virtual Reality CAVE)为研究环境,置入文化资产,更真实地保存文化与遗址的原貌技术是本论文的主要贡献。以使新的文化遗产成果更能够产生互动及叙述其历史变迁外,也能将资料数位化加以支援虚拟化空间,达到更完整的历史资料纪录。 The combined application and presentation of digital technology and cultural field can not only integrate historical research and literature surveys and visually record the deduced results, but can also reserve the historical information of the materials, methods, colors and styles possibly used back then. This paper selects the surrounding area of Fort San Domingo, a first-grade historical site in Danshui, Taipei County, as the historical city space under study. The digitalized files of historical space are established for the message and meaning carried by this studied area, through the analysis and compilation of textual and graphic data. The Virtual Fort San Domingo: Virtual Reality CAVE, is based on the 1983 entity restoration survey report, the 2005 and 2006 digital media data analyses of historical buildings and centers, and the 2005 and 2007 Fort San Domingo historical site research reports, accompanied by Fort San Domingo related research and literature as supports. Field digital photography verifies and compares spatial context and building structure under relevant space-time transformation. The accurately measured drawing plan can meet the precision requirement by transforming it into 3D model with computer technology. Texture mapping is used to represent the entity appearance of the historical building exteriority. The experiment and testing of image processing and color calibration mechanism are necessary to verify the actuality of the image color and scenery. The digitalized and virtualized processes placed in the operation of virtual reality CAVE can become the feasible method for digitalized reservation and conservation science and management of historical building and site conservation. The essence of digitalized conservation lies in permanent preservation. In the domain of historical building and site preservation and restoration, the research evidence of authenticity evaluation is the primary requisite. As to topics related to duplication authenticity, color calibration can display the color of digitalized originals, in which the color cognition is regarded as the scope of sense expression. This paper uses quantified analysis to position the demand of authentic duplication with digital technology. During the digitalized operational process, combining the fundamental concepts of the steps in color calibration and image transformation ensures the color quality achieve considerable degree of accuracy. The testing method proposed which mainly builds upon the preservation application method in the virtual historical space environment, is different from the existing operation of a color checker. The operational processes of historical site and building digitalization and virtualization take into account the conservation concepts to simulate 3D stereo display space. 3D modeling and interactive software are used to make the presentation. In order to satisfy the requirements of authenticity criticism, the degree of refinement and interactiveness of simulation can be enhanced with immersive virtual reality space technology and real-time visual presentation effects. Compared with previous research achievements, this paper incorporates interactive, multi-media and other digital technological elements, which enables free browsing of building structure and exteriority. Joystick can also be used to zoom in the views for careful observation of every corner. This paper utilizes digitalized concepts and techniques to integrate historical site sources with technology for the purpose of conservation and information exchange. The major contributions of this paper include linking digitalization, data visualization and space virtualization with interactive techniques, using Virtual Reality CAVE as the research environment in which the cultural property is placed, and conserving the original appearance of cultures and historical remains more authentically. Accordingly, new results of cultural heritages can better facilitate interactivity production and description of the historical changes. Also, the data can be digitalized so as to support virtualized space. This greatly increases the comprehensiveness of the historical data records. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009116821 http://hdl.handle.net/11536/49358 |
显示于类别: | Thesis |
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