【摘要】 在遥感图像处理软件ENVI的支持下,以甘肃省文县为研究区,分别计算了相关统计信息,利用相关系数矩阵、特征向量和特征值,按照最佳波段组合原则,对地震前后的TM图像进行了多种波段组合试验,并进行了比值分析。比较波段组合和比值法所得结果,可以看出以TM453的组合为基础,参考其他组合(如TM145,TM427和NDVIT、M5/TM3、TM4/TM3的组合)来增强图像信息,解译遥感图像的地物类型,分析比较震前震后的地物变化会得到较好的效果。更多还原

【Abstract】 Under the support of remote sensing image processing software ENVI,with Wenxian of Gansu as the study area,the relevant statistical information was calculated resp.According to the principles of the best wave band combination,multiple wave band combination test was made on TM images before and after the earthquake by using correlation coefficient matrix,eigenvector and eigenvalue.And the ratio was analyzed.The comparison results of wave band combination and ratio method showed that better effects could be obtained with combination of TM453 as basis,referring with other combinations(such as TM145,TM427 and NDVI,TM5/TM3,TM4/TM3 combinations) to enhance the image information,interpret the ground object types of remote sensing image and analyze the ground object changes before and after the earthquake.更多还原