Scalable Arbitrary Surrounded Surface Calibration for Multi-projector Rendering Application

A scalable multi-projector calibration method for arbitrary surrounded projection surface is proposed. The method is based on the viewing parameter based principle, which ensures that at each view point and in each direction, the image observed by the camera is the image rendered in these viewing parameters. The principle also ensures that multi-projector can be well aligned. Coded structured light method is used to establish the mapping relation of the projector image coordinates and the camera image coordinates. By prewarp the projection source image according to the mapping relation, image distortions can be removed. A high accuracy mechanical device is used to put the camera on. By moving or rotating the device, camera’s extrinsic parameters are easy to be resolved. The method has a build-in support for scalability and the results show that it achieves two-pixel accuracy.