Introduction to ENVI Photogrammetry

The ENVI Photogrammetry Module provides specialized tools to orthorectify images and create point clouds. All tools are supported on Windows 64-bit systems only. See the following topics:

Rigorous Orthorectification: Build highly accurate orthorectified images using an interactive workflow.

• Also refer to the Rigorous Orthorectification Tutorial.

Generate Point Clouds and DSM by Dense Image Matching: Create point clouds in LAS format from two or more images taken from different view points, while also creating a digital surface model (DSM) image.

• ENVI programmers can use the GeneratePointCloudsByDenseImageMatching task in an ENVI+IDL program.
• Also refer to the Generate Point Clouds and DSM Tutorial.

RPC Orthorectification Using DSM from Dense Image Matching:

• ENVI programmers can use the RPCOrthorectificationUsingDSMFromDenseImageMatching task in an ENVI+IDL program.