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：1998
卷号：XXXII Part 1
页码：44-52
出版社：Copernicus Publications
摘要：Scanners are necessary for retrieving digital information from analogue imagery. In the context of this paper, scanners as input devicesfor softcopy photogrammetric systems, which ask for high radiometric and geometric quality for the scanning process, are discussed.A classification and overview of scanners, their major technical characteristics, and their development the last years are given. Someimportant scanner aspects, including illumination, dynamic range and quantisation bits, colour scanning, use of linear versus areaCCDs, subsampling methods, scanning throughput and speed, and geometric and radiometric calibrations are presented. Thereby,different technological alternatives, their advantages and disadvantages are discussed
