Calibrating method based on fixed parameters and variable parameters for three-dimensional scanning system
A fixed-parameter, three-dimensional scanning technology, used in image data processing, instruments, calculations, etc., can solve the problems of affecting system accuracy, increasing system errors, and large calibration errors, and achieving simplified calibration process, high precision, and simple production. Effect
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[0035] The calibration based on fixed parameters and variable parameters in the 3D scanning system includes: firstly calibrate the fixed parameters; then combine the ideal pinhole perspective model to solve the homography matrix, and use the plane template method to calibrate the initial value of the variable parameters of the camera; Finally, the fixed parameters are taken as a constraint of the nonlinear optimization objective function, and the optimal solution of variable parameters is obtained by nonlinear optimization of the objective function.
[0036] Below with reference to accompanying drawing, specific embodiment of the present invention is described in more detail:
[0037] The present invention utilizes a plane calibration object—the calibration board to calibrate the camera parameters, and the calibration board is arrayed with circular mark points, as shown in the attached figure 1 shown. By processing the image captured by the camera, the coordinates of the worl...
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