Line Scan Camera Calibration Overview

The line scan calibration API determines the line scan acquisition model parameters from a set of <image, physical> correspondences from a single image.

Linescan camera calibration, like area-scan camera calibration, is performed by acquiring an image of a calibration plate, then calling a camera calibration function to perform the calibration. Linescan camera calibration requires the use of a checkerboad calibration plate that meets the requirements specified in the topic Checkerboard Calibration Plates.

Linescan camera calibration establishes a calibration transformation object (cc2XformCalib2, defined in ch_cvl\ccalib.h) that maps points from a physical space defined by the planar motion associated with the line scan camera to the image space of the image acquired by the camera. The calibration transformation object is established with lens distortion mode set to eLineScan.

You must call either the 1D warper or the 2D warper to create an unwarped version of the image acquired by the camera. The unwarped image removes the distortion associated with camera rotation, camera tilt, optical distortion, and uneven pixel size or spacing.