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  • 标题:Performance Evaluations of Macro Lens for Digital Documentation of Small Objects
  • 本地全文:下载
  • 作者:Hideharu Yanagi ; Yuichi Honma ; Hirofumi Chikatsu
  • 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:2008
  • 卷号:XXXVII Part B5
  • 页码:159-164
  • 出版社:Copernicus Publications
  • 摘要:Recently, documentation and visualization of various cultural heritages have been receiving attention, and small Buddha such as less 10 cm tall which was stored in the womb of Buddha is also included in cultural heritages. In order to document theses small objects in conservation of cultural heritage, zoom lenses are generally used. However, there are still issues for digital documentation of these smaller objects using zoom lenses. These problems include sharp imaging and distortions which occur with changes in focal length setting. On the other hand, macro lenses have ability in sharp imaging of small objects from the view point of working distance.With this motive, zoom and macro lens was mounted on digital single lens reflect camera, and accuracy and performance evaluations of the both lenses were investigated by three imaging modes, P-mode (Aperture value and shutter speed are set automatically), AV- mode (Aperture value are set by manually) and ADE-mode (Aperture value is set automatically by AF frame) respectively.This paper presents that the most remarkable point of the macro lens has ability to neglect lens distortion, macro lens shows stable solution in camera calibration and high quality image be able to taken by the AV mode. Furthermore, 3D modeling of small Buddha is also demonstrated in this paper
  • 关键词:Macro Lens; Zoom Lens; Distortion; Performance Evaluation; Digital Documentation; Cultural Heritages
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