Gruber M., Leberl F. High quality photogrammetric scanning for mapping

China International Geoinformatics Industry, Technology and Equipment Exhibition Mapping, 8th to 12th of May 2000, Beijing, PR China. — Preprint. — 15 p.Scanning of analog images has become the new key hardware technology specific to modern digital photogrammetry. Since specialized photogrammetric scanners have been introduced we observe a gradual development and enhancement of quality of the resulting scans. Originally, geometric accuracy of scanners was the overriding specification for these products. This is increasingly being augmented by a concern for good color and radiometric performance. This article discusses measures of radiometric range and resolution, and illustrates the ability of the UltraScan5000, a modern photogrammetric scanner manufactured by Vexcel Imaging Austria. The UltraScan5000 was introduced in November 1998 at the GIS/LIS’98 Conference in Ft. Worth, Texas. Since then a large number of installed systems on the entire globe proves on a daily basis the high quality of this scanning approach and the need for a superior performance in radiometry and color.