文章基本信息

标题：EVALUATION OF LIDAR AND PHOTOGRAMMETRY FOR MONITORING VOLUME CHANGES IN RIPARIAN RESOURCES WITHIN THE GRAND CANYON, ARIZONA
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作者：P. A. Davis ; S. N. Mietz ; K. A. Kohl 等
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：2002
卷号：XXXIV Part 1
出版社：Copernicus Publications
摘要：Elevation data from high-resolution photogrammetry and different resolution and replicate collections of LIDAR were compared with ground survey elevations of bare- and vegetated-sediment deposits within the Colorado ecosystem to determine their ability to map ground topography at an accuracy of =20 cm and to estimate sediment volume at an accuracy of =3%. We found high-resolution LIDAR and photogrammetry to meet this vertical accuracy requirement on bare-sand surfaces, but not on vegetated-sand surfaces. Photogrammetry and LIDAR second-return d ata produced the best vertical accuracies on vegetated-sand surfaces, but accuracies were only about 35 cm. Photogrammetry consistently produced the highest volumetric accuracies on bare ( ≤ 3%) and vegetated ground (4-9%). Overall, photogrammetry provides more accurate monitoring data than LIDAR, although more careful photogrammetric processing is necessary to attain monitoring accuracy requirements within vegetation
关键词：LIDAR; Photogrammetry; Accuracy; Precision; Ecosystem; Monitoring