Geometric Calibration

Calibration Requirements

Requirements Software operation Defining Calibration Tasks Definitions and Theory

Supported Systems

Supported Targets

Required Evidence

Test Setup

Calibration Procedure

Use in Imatest Master

Use in Imatest IT

Module settings

Module outputs

Defining a Device

Defining Distortion

Defining the System of Devices

Defining the Target

Defining a Test Capture

Defining a Test Image

Homogenous Coordinates

Projective Camera Model

Multi-Camera Systems

Distortion Models

Coordinate Systems

Rotations and Translations


 

Geometrically calibrating a device is not just a simple matter of running an image of a checkerboard through Imatest software. It requires prior information about the nominal device specification and a considered test setup appropriate to the device. In return, Imatest can produce consistent and accurate calibrations even for challenging devices in a constrained setting (such as a production line). 

Designing a calibration program for your device

Before you are able to make proper, accurate use of the Geometric Calibrator, you should: 

  • Determine your accuracy requirement for the parameters to be calibrated.
  • Gather the nominal device specification values for your system, including field of view for all devices, hyperfocal distance, and sensor pitch. 
  • Understand the Required Evidence for calibrating a system, how the Calibration Procedure will make use of it, and how the evidence required relates to your requirements.
  • Decide upon a Supported Target configuration based on your device(s’) parameters and the space allotted by your Test Setup

 

We highly recommend having us assist you in this process in situations that have demanding requirements.