Self-recalibration of a colour-encoded light system for automated three-dimensional measurements

Colour-encoded structured lighting systems are widely used for three-dimensional data acquisition based on machine vision. Calibration of such a system is a laborious and tedious task. This paper presents a novel method for self-recalibration of such a vision system. The relative pose between the projector and camera of the system is automatically determined by taking a single view of the scene, so that the three-dimensional measurements and reconstruction can be performed efficiently even if it is moved from one place to another or the configuration of the system is changed. Experiments were carried out to demonstrate the implementation of the proposed method.