在IDL中计算TVDI，基于徐永明老师的书籍，数据选择TVDI
Calculate TVDI in IDL, select TVDI based on teacher Xu Yongming's books and data (2020-06-27, IDL, 3KB, 下载2次)
打开国家卫星中心的图像文件，求一点的NDVI最大值
Open the image file of the national satellite center to find the maximum NDVI value of a point. (2018-08-06, IDL, 1227KB, 下载0次)
该程序是通过6s辐射校正模型生成查找表，以便进行气溶胶反演
; 该程序参数设置较为简单，如果要详细的参数，请自行设置
; 改进方法：1、读取每一个影像的角度信息建立查找表，这样精度更高
; 2、利用IDL直接调用Fortran语言的6S源程序，并行生成查找表，速度提高20倍左右
; 3、将所有参数都设置好，缩小步长，构建一个庞大的查找表，构建神经网络，一劳永逸
The program generates look-up table through 6S radiometric correction model, so as to conduct aerosol inversion.
The program parameter settings are relatively simple, if you want detailed parameters, please set it up by yourself.
The improvement methods are as follows: 1. Read the angle information of each image and create a look-up table, so that the accuracy is higher.
2, use IDL to invoke the 6S source program of Fortran language directly, and generate lookup table in parallel, and the speed is increased by 20 times.
3, set up all parameters, reduce the step length, build a huge look-up table, and build a neural network. Once and for all. (2018-04-06, IDL, 355KB, 下载9次)
读取hdf，HDF 是美国国家高级计算应用中心（National Center for Supercomputing Application）为了满足各种领域研究需求而研制的一种能高效存储和分发科学数据的新型数据格式。一个HDF文件中可以包含多种类型的数据，如栅格图像数据，科学数据集，信息说明数据。这种数据结构，方便了我们对于信息的提取。例如，当我们打开一个HDF图像文件时，除了可以读取图像信息以外，还可以很容易的查取其地理定位，轨道参数，图像噪声等各种信息参数。HDF 的数据结构是一种分层式数据管理结构。
read hdf,HDF is the National Center for Supercomputing application (National Center for Supercomputing Application) is a new efficient storage and data dissemination of scientific data format in order to meet the demand of various fields and the development of the. A HDF file can contain multiple types of data, such as raster image data, scientific data sets, and information indicating data. This data structure facilitates our extraction of information. For example, when we open a HDF image file, in addition to reading the image information, we can easily find its geographical location, track parameters, image noise and other information parameters. The data structure of HDF is a hierarchical data management structure. (2017-06-22, IDL, 1KB, 下载1次)
小熊工具箱是由中科院对地观测中心在读博士胡勇将自己写的IDL代码整理而成，包含许多实用功能：相对辐射归一化、矩匹配相对辐射校正、趋势分析、最大值合成、MODIS质量数据转换、批量矢量裁剪、MRT批处理、TVDI、ROI分离器、批量生成缩略图、批量生成影像范围（shp）
Bear toolbox by CAS CEODE PhD Hu Yong will write their own IDL code cleanup is made, it contains many useful features: relative radiometric normalization, moment matching relative radiometric calibration, trend analysis, maximum synthesis, MODIS data quality conversion, batch vector cutting, MRT batch, TVDI, ROI separator, batch generate thumbnails, generate batch image range (shp) (2016-04-19, IDL, 1067KB, 下载31次)
遥感图像处理代码，遥感图像正射校正代码，校正由于中心投影以及地形起伏引起的图像畸变
Remote sensing image processing code (2015-04-14, IDL, 2KB, 下载14次)
实现bmp格式图片的边界剪裁，即利用四个边界阈值来去掉边界区域，保留中心部分图像
this code is written to resize the bmp pictures (2015-01-07, IDL, 1KB, 下载1次)
小熊工具箱是由中科院对地观测中心在读博士胡勇将自己写的 IDL 代码整理而成，包含许多实用功能：相对辐射归一化、矩匹配相对辐射校正、趋势分析、最大值合成、 MODIS 质量数据转换、批量矢量裁剪、 MRT 批处理、 TVDI 、 ROI 分离器、批量生成缩略图、批量生成影像范围（shp）。
Winnie the toolbox from the CAS CEODE PhD Hu Yong will write their own IDL code was compiled, contains many useful features: the relative radiation normalized moment matching relative radiometric calibration, trend analysis, maximum synthesis, MODIS quality data conversion, batch vector clipping, MRT batch, TVDI, ROI separator, batch generate thumbnails, generate batch image range (shp). (2013-10-31, IDL, 135KB, 下载78次)
这个代码可以获取modis数据的一些信息，如获取时间，产品类型，经纬度坐标，四个角点坐标，中心坐标等等。
This srcipt can obtain some info of the modis product. For instance, acquire data,
product type, lati&logi, four coner coordinate, central coordinat ext. (2012-08-18, IDL, 2KB, 下载9次)