Geometric Correction

Optical Satellite Orthorectification

Geometric Correction, Recent Tutorials / By Erica Lemieux

Table of Contents Orthorectified images (orthos) are geometrically corrected and georeferenced imagery. Orthorectification is the process of using a rigorous math model and a digital elevation model (DEM) to correct distortions in raw images. This tutorial outlines the optical satellite orthorectification process using OrthoEngine. This workflow will show how to import data, collect ground control …

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Super Registration in CATALYST Professional

Geometric Correction, Recent Tutorials, Scripting, Tutorial / By Dan Watt

Super Registration Workflow Overview The super registration algorithms can co-register images with up to 1/10th of a pixel accuracy to reduce the risk of misalignment errors. This misalignment can be caused by poor math models (e.g. inaccurate GCPs), a low quality elevation model or distortions in the camera lens. Poor alignment can make some types …

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