IDL批量进行modis的云检测

基于IDL的遥感影像多波段计算，单波段计算。可以实现赋值以及简单的运算功能(Multi-band calculation and single-band calculation of remote sensing image based on IDL. It can realize assignment and simple operation function.)

灰度 GM（1.1）模型：灰色系统其内部一部分信息已知，另一部分信息未知或不确定。对既含有已知信息又含有不确定信息的系统进行的预测，也就是对在一定范围内变化的、与时间序列有关的灰过程进行 预测。(Gray GM (1.1) model of grey system: the internal part of the information known, the other part of the information is unknown or uncertain. In which there are both known information and uncertain for the prediction information system, is also the process of gray change in a certain range, with the time series related to Prediction.)

可评价影像融合质量，信息熵、标准差、相关系数等(Evaluable image fusion quality, information entropy, etc.)

说明：  利用ENVI进行大气校正代码,c#可以正常调用(use ENVI to CAL_QUACC)

Colibri介绍 Colibri是一个基于ENVI/IDL平台实现的一个开源软件包。里边包含了多种多样的算法和程序。 代码是使用不同子文件夹来存储的。每一个文件夹内都含有一些源码文件。在根目录下的Reference Guide.html文件中包含了所有对象及函数的功能介绍、调用方法等，类似于IDL帮助。 Ø Application – General：含有一些通用功能，比如图像分类、创建合成图像、DSM转换为DTM等功能 Ø Application – Toolbox：包含两个GUI应用程序，功能分别为图像分类后处理（可以新增类别、修改类别等）、高光谱数据处理（光谱平滑，可进行批处理）。 Ø Classes：此文件夹包含了一些通用功能代码，主要为自定义类。 Ø Common：此文件夹包含了一些图像处理函数。如图像分类、SVM、RMSE计算等。 Ø Documents：此文件夹包含了一些参考文献和LOGO等文件。 Ø Examples：包含了一些示例代码和示例数据。 (Colibri is a repository for source code developed in ENVI/IDL under the Open Source Initiative. It contains a wide variety of algorithms and applications which are of interest for the remote sensing community. The code is organized in a hierarchical way. At the lowest level, common code performing all kinds of basic functionality is available to the higher levels, i.e. classes and applications. Classes are object based functionalities performing more specific tasks. Both common code and classes are the building blocks for the applications which perform well delineated tasks. All common code, classes and applications are well documented. The complete set of code and documentation are available to the remote sensing community. ENVI/IDL code developers and remote sensing researchers are requested to actively contribute to this ENVI/IDL Code Library in order to obtain a solid reference of user developed applications for the remote sensing community.)

说明：  利用IDL进行批量对遥感影像进行重命名，非常方便(Rename remote sensing images in batches)

读取MODIS的HDF文件和ENVI IDL的程序(MODIS ENVI IDL readhdf.pro)

说明：  idl教程的随书程序，可以帮助你学习点语言(idl tutorial with the book can help you learn the language point)

说明：  在估算地表蒸散发的过程中，需要像元的冷热点。该函数实现了冷热点的自动选取功能(In the process of estimating surface evapotranspiration, the cold and hot spots of pixels are needed. The function realizes the function of automatic selection of cold and hot spots)

调用 envi5.3自带的FMask云检测功能，并输出掩膜文件(Call the FMash cloud detection function of envi5.3 and output the mask file)