Bare land extraction method of rain-induced shallow landslides based on SPOT5 images
For the image characteristics of more serious damage to vegetation,geological characteristics and mechanism of remote sensing,the paper put forward some remote sensing indices based on background value of remote sensing images,such as vegetation index,soil brightness index,PC1 of principal components transformation and terrain data,which could reflect background information of landslides and collapses.Meanwhile,integrated calculation method of remote sensing index was proposed,which could effectively increase spectral differences of bare land with vegetation,terrain shadows,rivers and other surface features.Gray value of bare land was the lowest in the image so as to obtain segmenting value to accurately extract polygons of bare land based on automatic selection algorithm of threshold.
landslides and collapses bare land background value of remote sensing images remote sensing index information extraction
Shuwen Yang Yikun Li Guangsheng Feng Tao Liu Zhihua Zhang Lifeng Zhang
Faculty of Geomatics and Geographic Information, Lanzhou Jiaotong University Lanzhou, China The Fourth Survey and Design Institute of China Railway Wuhan, China
国际会议
兰州
英文
1-4
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）