摘要
选取中巴资源一号卫星(CBERS-1)CCD数据南京幅典型地区作为研究区,其范围为1 262×1 295像元区域.通过分析不同水体在不同波段的光谱特征,及山区阴影对水体提取的影响,提出了一种新的水体遥感信息提取方法一迭代混合分析方法,适合于亮度值偏低的中巴资源一号卫星数据.利用该方法进行了水体信息提取实验,实验效果良好.因此,通过水体信息提取,中巴资源一号卫星数据可为洪涝灾害评估预测提供基础数据.
The paper gives an example of water information extraction from CBERS-1 data. The typical study area is chosen from the Nanjing field of CBERS-1 CCD Data. The size is 1 262 by 1 295 pixels. The spectral characters of different water bodies in different wave bands are analyzed. Water and mountainous shade could be extracted from the other ground objects. Then the influence of mountainous shade on the extraction of water is discussed. According to the threshold value technique and the method of spectral relation, we bring forward a new remote sensing information extraction method of water named iterative mixed analysis. Finally we carry experiments on water information extraction using the method, and obtain good results. Therefore the CBERS-1 data can well be applied to forecast and evaluation of floods and disasters.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第1期106-112,共7页
Journal of Nanjing University（Natural Science）
基金
国家"九五"重点科技攻关项目(96-912-01)
江苏省自然科学基金(BK2001041)
中德合作SILUP项目
