Brief Communication: Low-cost, on-demand aerial photogrammetry for glaciological measurement

被引:67
|
作者
Whitehead, K. [1 ]
Moorman, B. J. [1 ]
Hugenholtz, C. H. [1 ]
机构
[1] Univ Calgary, Dept Geog, Calgary, AB T2N 1N4, Canada
来源
CRYOSPHERE | 2013年 / 7卷 / 06期
关键词
STRUCTURE-FROM-MOTION; AIRBORNE LIDAR; MODEL;
D O I
10.5194/tc-7-1879-2013
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
Remotely sensed glaciological measurements can be expensive, often involving a trade-off between resolution, scale, and frequency. We report on a case study in which two low-cost techniques were used to generate digital elevation models and orthomosaics of an Arctic glacier in consecutive ablation seasons. In the first aerial survey we used an unmanned aerial vehicle and acquired images autonomously. The following year we took advantage of the helicopter used for site access, and were able to acquire images manually, for little additional helicopter time. We present a preliminary assessment of accuracy and apply these data to measure glacier thinning and motion.
引用
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页码:1879 / 1884
页数:6
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