Image Geometries

Next topic: Photogrammetry →

At the heart of Argus methods is an understanding of the relationships between the locations of an object in the world and in an image. This general topic is called photogrammetry and determination of calibration coefficients used in these relationships is often called solving for the image geometry and consists of two components. Intrinsic calibration finds five calibration coefficients that are functions only of the camera and lens, so can be found in the lab prior to field installation. Extrinsic calibration finds the six coefficients that describe the location and viewing angles of a camera once installed. Extrinsic calibration is carried out by viewing Ground Control Points (GCPs).

This section discusses each of these components of Argus photogrammetry.

• Photogrammetric Principles
• Intrinsic Calibration
• Ground Control Points
• Extrinsic Calibration

Next topic: Photogrammetry →