Projector optical distortion calibration using Gray code patterns

作者：Samuel Jordan, Michael Greenspan · 年份：2010 · DOI：10.1109/cvprw.2010.5543487 · 被引用次数：10 · 研究领域：Optical measurement and interference techniques、Advanced Measurement and Metrology Techniques、Surface Roughness and Optical Measurements

A method is presented for correcting optical distortion in data projectors using a single camera and Gray coded structured light patterns. The proposed method assumes that both the camera and projector exhibit significant nonlinear optical distortion and the projection surfaces can be planar or freeform. Calibrated systems produce geometrically correct, extremely short throw projections, while maintaining or exceeding the projection size of a standard configuration. Both qualitative and quantitative tests are run to verify the accuracy of this method and we achieved a throw ratio of 0.5 with an average camera pixel distance error of 1.5.