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基于延时数字摄影测量的积雪过程4D监测技术研究
刘俊峰1(), 陈仁升1,2, 韩春坛1, 郭淑海1, 刘章文1, 王学良1,3, 卿文武4
Snow surface monitoring from 4D structure from motion photogrammetry
Junfeng LIU1(), Rensheng CHEN1,2, Chuntan HAN1, Shuhai GUO1, Zhangwen LIU1, Xueliang WANG1,3, Wenwu QING4

图5. 4D摄影测量正射影像捕捉的坡面尺度逐日积雪空间分布
注:(a)2020年11月21日降雪首日积雪覆盖率达到95%;(b)11月22日少量积雪消融,积雪覆盖率略微降低;(c)~(e)11月23日至25日太阳辐射导致积雪快速消退,积雪覆盖率持续降低;(f)~(j)11月26日至30日少量积雪分布在陡坎背阴处

Fig. 5. 4D SfM photogrammetry captured daily snow cover distribution over slop scale
Note:Snow coverage reached to 95% after snowfall on 21 of November,2020 (a);snow cover reduced slightly on 22 of November(b);snow cover reduced quickly from November 23 to 25 in 2020[(c),(d),(e)];little snow cover distributed over the shadowed area of steep slope from November 26 to 30[(f),(g),(h),(i),(j)]