摘要
本文提出了一种基于卫星图像数据的LBV变换与归一化植被指数NDVI的遥感影像水体信息自动提取的方法。水体经过LBV变换后形成的B分量图的灰度值很大,水体信息的归一化植被指数值小于0;构建水体信息自动提取模型条件是水体信息满足B分量数值大于某一阈值并且归一化植被指数值小于0;与其它方法进行实验比较该方法可以较准确的进行水体信息的自动提取,同时准确地将水域与低密度覆盖的水植混合体分开。
The paper brings forward one method of automatic picking-up water-body in the remote sensing image. The method is based on the LBV switch and the unitary vegetable index NDVI. The water-body has big value of the B heft,and the unitary veg-etable index〈0. The factor which the water-body information can be contented is the number of NDVI〈0 and the heft of B〉one threshold. This method of automatic picking-up the water-body has more definition than others,and can distinguish the water area with the low-density mixture of water and plant truly.
出处
《微计算机信息》
北大核心
2008年第36期303-304,309,共3页
Control & Automation
基金
中国科学院知识创新重要项目"中国水土流失现状
趋势与对策研究"(KZCX2-YW-401)申请人:王刚李小曼
