Camera Calibration Implementation Based on Zhang Zhengyou Plane Method
Camera calibration is a crucial step in computer vision, the main determinant of the visual measurement effect, laying the basis for three dimensional reconstruction. In order to know calibration's precision exactly, pinhole model and relations of the four coordinates are used, camera's internal and external parameter matrices can be solved by Zhang Zhengyou plane calibration method, camera's distortion coefficients are then easily solved, further considered radial distortion and tangential distortion. The paper establishes a simple but clear error assessment system to evaluate the accuracy of the results and compares them with MATLAB toolbox. The experiment demonstrates that the method has high accuracy, establishing a foundation for seeking depth by binocular stereo vision.