如何使用helcon（1，2，3部）

压缩文件中的代码可以读取图片并计算绿色植被的归一化植被指数，直接在IDL中打开即可使用(The code in the compressed file can read pictures and calculate the normalized vegetation index of green vegetation,and you can open it directly in IDL and use it.)

各种图像质量评价方法，非常适合图像的客观质量评价。(All kinds of image quality uation method, it is very suitable for objective image quality uation.)

双峰法是一种简单的阈值分割方法，即如果灰度级直方图呈现明显的双峰状，则选双峰之间的谷底所对应的灰度级作为阈值分割。(Two peaks is a simple threshold segmentation method, that is, if the gray level histogram showed a clear bimodal shape, then choose between the two peaks corresponding to the bottom of the gray level as threshold segmentation.)

求图像的二维直方图，产生共生矩阵，可以比较像素点分布的是否均匀。(Two dimensional histogram for image, the co-occurrence matrix, can compare the pixel distribution is uniform.)

说明：  一种自适应的图像去噪方法，MATLAB实现(An adaptive image denoising method, matlab implementation)

图像拼接源码实现，包括多频率图像融合，sift特征点配准算法(Image Stitching source implementation, including multi-frequency image fusion, sift feature points matching algorithm)

ENVI4.7及以上版本和IDL7.1以上版本,将高光谱遥感图像进行Savitzky-Golay光谱平滑滤波(ENVI4.7 above and IDL7.1 and above, hyperspectral images Savitzky-Golay smoothing filter spectrum)

图像去云处理小程序，可以方便地对有云覆盖的影像进行处理，操作简单，效果较好(cloud remove procedures)

说明：  实现图像分类，可完成对图像的多分类问题，效果较好(Realize image classification, can complete the multi-classification of images, the effect is better)

说明：  干涉SAR(InSAR)相位解缠处理代码，包括枝切法及质量图指导法，代码为matlab(Interference SAR(InSAR) phase unwrapping code, including the branch cut method and quality chart guidance method, the code is MATLAB)