Linear and Nonlinear Solving Methods of Camera Intrinsic Parameters Based on Zhang’s Algorithm

Based on the camera calibration algorithm proposed by Zhengyou Zhang,we firstly calculate the holography between image plane and space plane of the chessboard by way of the least square method.In the next step,two constraints equations are derived by two fundamental constraints of the holography.On the basis of the given equations,we work out the camera intrinsic parameters through linear and nonlinear solver methods,whose feasibility can be verified by experiments with real data.