IDL语言图像的直方图规定化

输入气象数据，根据ASRL模型计算森林区域最大树高(mapping maximum tree height with ASRL model)

create a small multiple contour plot to compared contour plots of different dates with Coyote Graphics routines.

介绍了IDL的一些图像分割技术，并且附有代码例子(Some image segmentation techniques of IDL are introduced, and code examples are attached)

coordinate transformation code of IDL_from ECI coordinate to GEO coordinate

说明：  IDL读取txt，txt第一列是纬度，第二列是经度，第三列是DN值， 坐标转行列号 ，并以图像的形式输出(IDL reads TXT. The first column of TXT is latitude, the second column is longitude, and the third column is DN value. The coordinate turns the line and column number and outputs it in the form of image)

说明：  利用二分法模型，利用NDVI提取置信区间计算植被覆盖度(Calculation of vegetation coverage by dichotomy)

将SEPI netcdf 转为 tiff格式。(netcdf to tiff.)

说明：  根据XML文件获取相应的辐射定标系数，只针对GF1和GF2(Obtain the corresponding radiometric calibration coefficients according to the XML file, only for GF1 and GF2)

利用idl写的根据遥感影像自动匹配的自动校正，调用envi自带函数envi_auto_tie_points_doit envi_register_doit(Use of remote sensing image idl write according to automatic matching of automatic correction, call envi bring their own function： envi_auto_tie_points_doit envi_register_doit)

图像A中0表示水体，1表示植被，2表示裸地；B中4表示水体，2表示植被，1表示l裸地。 本程序将B的分类编码改成和A一致；以A为参考图像生成参考矩阵；计算总体精度和kappa系数。(Image A shows water body in 0, vegetation in 1, bare land in 2, water body in 4, vegetation in 2 and bare land in 1. In this program, the classification coding of B is changed to the same as that of A, the reference matrix is generated with A as the reference image, and the overall accuracy and kappa coefficient are calculated.)