METHOD AND APPARATUS FOR CALIBRATION OF MULTIPLE PROJECTOR SYSTEMS

摘要

Aspects disclosed herein relate to a method for improving the calibration of multiple projector systems in Spatial Augmented Reality systems where multiple projectors are used to project images directly onto objects of interest. In such systems, multiple projectors are often used to project the same image onto an object from different locations in order to reduce shadowing while users interact with the object, or to provide complex or extended display. The methods and system described herein describe a method for improving the calibration of multiple projector systems in order to improve the alignment and clarity of projected images by reducing ghosting that can occur with poorly aligned projectors. The system uses a planar photodiode and the projector is used to project a plurality of projection regions, such as scan lines, across the planar photodetector and calculating the position based on weighting measurements by the measured light intensity. Position estimates are an order of magnitude better than existing approaches resulting in high quality calibration and projected images in SAR systems.