Study of Camera Calibration of Its Position and Pose from Images

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In this reseach, we developed new methods to determine camera position and pose from object images taken by the camera. We established some efficient and high speed algorithms for accurate calibration of camera extrinsic parameters (position and pose) and also intrinsic parameters (focal length of lens, image center etc.)The main works and results were :(1) We reviewed and summarized conventional techniques for camera calibrations and classified them into some categories with respects to computational aspects and applications. Based on this review, we discussed and made clear the problems for high speed computations and accuracies.(2) For an accurate calibration technique, we extended the two plane method. We made its error analysis, and based on it, we developed an optimal set up strategy for high precision calibration.(3) For an easy calibration technique, we developed a high speed method where we approximated the imaging system to reduce computational complexities and enabled real time camera calibration.