General imaging model-based parallel light pipe emergent light beam modeling and camera internal parameter calibration method

The invention relates to a collimator emergent light beam modeling and camera internal parameter calibration method and system based on a general imaging model, and the method comprises the steps: employing a collimator with a star calibration pattern reticle, employing a general camera to carry out the photographing data collection of a collimator star calibration pattern, carrying out the feature extraction of a collected calibration data set, and carrying out the feature extraction of the collected calibration data set; general camera calibration is carried out according to the extracted image features, modeling is further carried out on the collimator according to the calibrated internal parameters, other cameras to be calibrated shoot the modeled collimator, the coordinates of the mark points are determined, and calibration of the internal parameters of other cameras to be calibrated can be completed by using a parameterized calibration model. By adopting the method or the system, the calibration of the