基于相位—高度映射的简易条纹投影测量模型和标定方法

To address the problem such as complex operation and poor usability in the traditional fringe projection measurement method, a flexible fringe projection measurement model based on phase height mapping was proposed. The mapping relationship from absolute phase value to the spatial coordinates was built by the measurement model, without considering the geometric constraints between the camera and the projector. The proposed calibration method needed neither the geometric constraint relationship between the camera and the projector, nor high-precision auxiliary tools such as gauge block or high-precision displacement stage. It only needed a checkerboard calibration board to complete the system calibration. The measurement system had the advantages of simple structure, high efficiency, high accuracy and good usability. Simulation and experiments had been performed to validate the effectiveness of the measurement model.