New automated method for extracting river information using optimized spectral threshold water index
作者： Chaojun Li , Shijie Wang , Xiaoyong Bai , Qiu Tan , Yujie Yang
DOI: 10.1007/S12517-018-4124-Z
关键词:
摘要: The accurate extraction of mountain river information is highly significant in water resource investigation and ecological environment protection. However, there are some problems the existing methods extraction, which mainly interference from shadows buildings. Such leads to erroneous redundant information, inaccuracy or incompleteness. In this study, a precise method established using Landsat8 image digital elevation model. main steps as follows: (1) we propose optimized spectral threshold index extract information; (2) based on model data, simulate study area remove them; (3) establish buffer zone network data solve problem (4) separately calculate then standardize land surface temperature, albedo, normalized different building index. effects buildings near removed. Results show relative accuracy 97.52%. new decreases
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