Plane-based calibration of a projector-camera system

Accuracy and simplicity of system calibration is a key challenge in 3D computer vision tasks. A calibration method by a planar checkerboard to minimize calibration complexity and cost is proposed. This method is based in considering the projector as an inverse camera which maps 2D image intensities into 3D rays, thus making the calibration of a projector the same as that of a camera. In this way, having the 2D projected points and its 3D correspondences the system can be calibrated using a standard camera calibration method such as the one implemented in Bouguet’s Calibration Toolbox. A projector-camera system has been calibrated by this method, and a good 3D reconstruction quality has been achieved by the calibrated system.