有云Landsat TM/OLI影像结合DEM提取青藏高原湖泊边界的自动算法研究
王鑫蕊,晋锐,林剑,曾祥飞,赵泽斌

Automatic Algorithm for Extracting Lake Boundaries in Qinghai-Tibet Plateau based on Cloudy Landsat TM/OLI Image and DEM
Xinrui Wang,Rui Jin,Jian Lin,Xiangfei Zeng,Zebin Zhao
表3 本算法自动提取的1989年湖泊边界与手工数字化边界的长度、面积差异分析
Table3 Analysis of the differences of length and area between the automatically extracted lake boundaries by this algorithm and the manually digitized boundaries in 1989
湖泊名称Landsat-5+DEM确定长度/km无云影像确定长度/km长度差/km长度差百分比/%Landsat-5+DEM确定面积/km2

无云影像确定

面积/km2

面积差/km2面积差百分比/%
达如错56.7251.844.889.4061.4459.941.502.50
切里错19.4820.55-1.07-5.2110.6610.86-0.20-1.84
懂错72.1471.770.370.52131.37133.03-1.66-1.25
江错26.6828.63-1.95-6.8136.1736.95-0.78-2.11
蓬错67.4369.10-1.67-2.42142.31140.761.551.10