变差函数及其在多波段机载成像光谱仪数据处理中的应用  

The Use of The Variogram in Airborne Visible/Infrared Imaging Spectrometer 71-Band Images

作　　者：董庆[1] 冯林新[1] 

机构地区：[1]国家海洋局海洋技术研究所

出　　处：《海洋技术》1997年第4期11-16,共6页Ocean Technology

摘　　要：遥感的空间信息反映一定范围内象元在空间上的关系，对成像光谱仪遥感数据而言，空间结构变化代表一个局部区域中各象元之间光谱辐射能量的关联状态，在图像上反映为灰度变化，利用空间信息来开拓图像分析技术可获得遥感目标很高的正确识别率。变差函数是联系遥感目标和图像中空间变化特征的有用工具，实验变差函数的计算结果表明遥感目标种类与变差图之间的定量化空间关系，可以在成像光谱图像处理中发挥作用。It is the increased use of spatial data in remotely sensed images that we can get the valuable extraction.The approach to link the nature and causes of spatial variation in images is to use the variograms.The data results from the airborne visible/infrared imaging spectrometer over the sea prove that the variograms are the tool used to link models of sea surface scenes such as cloud,the cloud shadows and the normal sea surface.Some sirections variograms indicate the irridance anisotropy,the height of the sills of the variograms are related to the kinds of the remotely sensed objects and the range of the influence is related to the acting distance in pixels of the sea objects.Therefor,the variograms can be used in unsupervised pattern in area by the airborne or spaceborne sensed images.

关 键 词：遥感 成像光谱仪 变差图 数据处理 变差函数 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置] P714[自动化与计算机技术—控制科学与工程]