# Calibration Plates

To use the Checkerboard Calibration tool to perform linear or nonlinear calibration, you must supply the tool with an acquired image of a calibration plate. The tool supports both checkerboard and grid-of-dots plates. A calibration plate must meet specific requirements in order to work with the tool.

Note: Cognex recommends the use of a checkerboard plate. Calibration using a checkerboard plate and exhaustive feature extraction provides a more accurate calibration than using a grid-of-dots plate.

See the following topics for more information.