Planar-based camera-projector calibration

Structured light (SL) systems make use of a projector and a camera pair to reconstruct the 3D shape of an object. To this end a previous geometric calibration is required. Many camera and projector calibration algorithms have been proposed during decades. However, the necessity to have an easy to use system, non linked to the SL algorithm developed, still remains unsolved. This work proposes a new method for the calibration of the extrinsic and intrinsic parameters of the projector camera pair. The algorithm requires only a two-sided plane having a checkerboard at one of the sides, and does not depend on the SL algorithm used for the 3D reconstruction. Linear and non linear distortion is considered in the calibration of both devices thus obtaining good calibration results, as is shown in the experimental results.