ENVI使用记录

在处理遥感影像时候遇到了一些不熟悉的ENVI工具使用方法，现在简单的记录一下！

另外ENVI5.6.3是不是很多工具的名称变了呢？我看了个视频https://www.youtube.com/watch?v=tngJ6TRRWHU和ENVI5.6.3界面不一样！

我卸载了适用的ENVI5.6.3换成了ENVI5.6学习版；

Build Layer Stack

IDL帮助文档中的描述：
This task builds a layer-stacked raster from a set of rasters that will be reprojected and regridded to a common spatial grid. The input rasters do not need to have the same number of columns and rows.
简单来说就是将多个栅格堆成一个栅格。

• 难免LayerStack的影像的行列数会不一致，里边有个Intersect的选项，Calculate Union/Intersection选项！

Subset Data from ROIs（ENVI Version 5.6）

根据输入的矢量文件对影像进行裁剪。

Resize Data

类似于ArcGIS中的重采样

Image Registration

The Image Registration workflow geometrically aligns two images with different viewing geometry and/or different terrain distortions into the same coordinate system so that corresponding pixels represent the same objects. The process includes locating and matching a number of feature points (called tie points) in two images (a warp image and a base image) selected for registration.

参考：https://www.cnblogs.com/enviidl/p/16888125.html