Substripe Localisation for Improved Structured Light System Performance

Temporally encoded structured light systems are one of the many types of active 3D range sensors available. 3D data is obtained by observing light patterns projected into the scene. In some situations, e.g., calibration, it is necessary to determine the point on the projector emitter plane that corresponds to a given image-plane location, even though the emitter plane is discretised into a finite number of stripes. Thus, a substripe estimator is required. This paper describes three such estimators, and their performance is compared.