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：2006
卷号：XXXVI Part 4
出版社：Copernicus Publications
摘要：National Remote sensing Agency (NRSA), India is the nodal agency for acquisition and dissemination of remote sensing satellite and aerial data to user community. NRSA provide remote sensing data in digital and photographic media. NRSA has been acquiring remote sensing satellite data since the late seventies from various foreign satellites and indigenously developed IRS satellites. The photographic masters generated since late seventies covering all IRS, Landsat and SPOT series satellites have been archived in film archives. These films contain data which are systematically corrected, geo referenced / geo coded with appropriate scene details and annotation. At present more than 75,000 masters both B/W and FCC films are archived. These films bound to get deteriorated due to ageing and could not yield good results on a photographic media. In order to use the valuable data available in the analogue form for various applications a case study is taken up to convert the satellite films to digital images for subsequent use in digital systems. The digital data would be much useful for various remote sensing applications. The historical data would provide information content about the earth features in different stages, so that it is useful for potential GIS applications, change detection, temporal analysis , feature correlation etc. with present and future data. Creation of database of this kind would disseminate data to the concerned for their usage
关键词：IRS; Georeferenced; Film archives; Master film; Scale; Size; Scanner; AOI; Tone Reproduction curve
