Camera lens distortion calibration with co-line points;

In order to develop a structured light 3D measurement system based on off-the-shelf digital camera and projector,a system mathematical model,a calibration scheme and a lens distortion correction scheme were investigated.

This paper presents a high-precision stereo camera calibration technique combined the improved two-step method with accurate control points,in which the lens distortion of a camera is modeled by a combination of radial distortion and tangential distortion.