In the process of the parameter calibration of projector camera system,the recognition accuracy of corner is low and the noise immunity is poor.To solve the above problems,a new projection color pattern feature image and a sub-pixel corner detection algorithm are introduced to increase the accuracy of corner detection and recognition.In the process of photon signal transmission,the projector-camera can cause photon signal loss due to the coupling of system channel,therefore,the system coupling is modeled an...