摘要
提出一种新的高分辨率遥感影像真彩色模拟方法。该方法从遥感成像光谱角度,依据地物波谱特性,采用光谱角匹配模型(SAM),首先计算出地物在绿(G)、红(R)、近红外(NIR)以及短波红外(SWIR)波段的整体和局部波谱向量角;然后根据角度距离构建最小距离隶属函数,查找对应地物波谱库中最为相似的地物波谱;最后对此条地物波谱曲线积分计算出该像素点在蓝波段的反射率。实验表明,该方法模拟出的SPOT真彩色影像在视觉效果和空间信息上优于传统的方法。
A new method of high spatial resolution remote sensing image true color simulation is proposed.The method utilizing spectral angle match（SAM） model to find out the mapping spectrum in library,according to the ground objects spectrum features.Firstly,overall and partial spectral vector angle between spectrum of pixels and reference spectrum in library is calculated,based on green（G）,red（R）,near infrared（NIR） and short-wave infrared（SWIR） bands.Secondly,the most similar spectral curve is searched in the spectral library according to the minimum distance function which is established on the angle distance.Finally,the reflectance of pixels in the blue band is calculated through the spectral integral.Experiments show that the proposed method is better than traditional methods both in visual effects and spatial information.
出处
《测绘学报》
EI
CSCD
北大核心
2010年第2期169-174,共6页
Acta Geodaetica et Cartographica Sinica
基金
国家863计划项目(2009AA12Z123
2009AA12Z148)
国家科技支撑重大项目(2006BAJ02A01
2006BAJ03A08)
