期刊名称:ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN:2194-9042
电子版ISSN:2194-9050
出版年度:2004
卷号:XXXV Part B5
页码:824-827
出版社:Copernicus Publications
摘要:Documentation of cultural heritage sites can provide data and records for continuing research, analysis, monitoring, and change detection. Digital documentation allows computational analysis as well as archival recording of objects and sites. It provides a non- destructive approach to artifact or site mapping and measurement. Virtual models of cultural sites can be created from digital imagery, using widely available non-metric digital cameras and video recorders. Software, such as PhotoModeler. allows the construction of three-dimensional virtual modeling of objects, sites, and rooms by using multiple digital photographs. Methods for constructing virtual models currently require multiple photos from varying angles to provide sufficient ground control points as well as ample coverage of the site. Use of an extreme wide-angle lens camera, such as the Nikon fish eye lens, can overcome the need for numerous pictures and allows the capture of more information per image. This can speed the process of documentation while also providing more coverage. Wide-angle lenses have not been previously used due to the difficulty in registering the extreme distortion on the edges of the lenses. A project was undertaken to calibrate such a lens and to test its effectiveness in capturing images for virtual reconstruction using PhotoModeler software. The lens used was a Nikon fish-eye lens, mounted on a Nikon Coolpix camera. Two sites were selected for the test. The first was the interior of a modern building with a large three-story atrium. This site was chosen to initially calibrate the camera and lens for the software. The second site selected was the Salinas Pueblo Missions National Monument, a complex of archaeological sites used to test the effectiveness of the camera, lens, and PhotoModeler software in a cultural heritage site preservation application