Citation: | WANG Junhao, WEI Yunjie, MEI Aoshuang, GUAN Jianjun, DING Xiang, WANG Shuangting. 2021. Multidimensional extraction of UAV tilt photography-based information of loess landslide and its application[J]. Geology in China, 48(2): 388-401. doi: 10.12029/gc20210204 |
Aiming at the needs of geological disaster investigation and assessment in loess area, a multi-dimensional extraction method of landslide single information based on UAV tilt photographic image and flight control data was explored. Rich information of the Jiajiacun landslide was quantitatively extracted from DEM, DOM and real scene 3D model obtained by image processing, including its slope shape, slope, relative height difference, vegetation coverage, longitudinal slope ratio, surface area and source volume. The stratigraphic lithology and regional structure are analyzed by using relevant geological data. Combined with the regional meteorological data, the spatial and temporal distribution of annual average rainfall of Jiajicun landslide was analyzed, which provides an efficient and accurate qualitative and quantitative reference for the accurate assessment of its stability and risk.
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Route plan chart
The DSM and DEM model of Jiajiacun landslide
The DOM model of Jiajiacun landslid
The 3D real scene model of Jiajiacun landslid
Slope classification of Jiajiacun landslid
Histogram of slope classification of Jiajiacun landslid
Distribution of relative height difference of Jiajiacun landslid
Histogram of relative height difference of Jiajiacun landslid
Slope distribution of e of Jiajiacun landslid
Histogram of slope of Jiajiacun landslid
Longitudinal and transverse section lines of Jiajiacun landslide
Cross section of Jiajiacun landslid
Longitudinal profile of Jiajiacun landslid
Three-dimensional model height difference and slope length
Landslide surface area and volume measurements
Classification results of SVM
Histogram of classification results
Landslid position and equal rain value in Jiajiacun
Variation of mean monthly rainfall over years
Basic feature interpretation of Jiajiacun landslid