【摘要】 转动扫描投影云纹方法适用于大面积、高分辨率的三维形貌测量。在转动测量中，拼接精度依赖于转轴与转动角度的精确性。现有方法侧重于转轴标定，转动角度由机械转台确定，然而在高分辨率测量中，机械转台的角度精度不足以满足测量需求。本文提出一种基于角度校正的三维形貌拼接方法，该方法利用不同视场公共区域内物体的自身形貌构建相关函数，并采用反向高斯牛顿方法迭代出精确的转动角度，从而实现转动测量的精确拼接；在系统标定完成后，本文方法仅需对物体进行简单的多角度扫描，就能实现高精度的完整形貌测量。文中开展了2组多视场三维形貌测量实验，结果表明，所提方法可以精确校正转动角度，而且具有简便、灵活等优点。更多还原

【Abstract】 The rotation scanning projection moiré method can is suitable for large-area and high-resolution 3D profile measurement. In the rotating measurement, the precision of the registration depends on the accuracy of rotation axis and rotation angle. The existing methods focus on the calibration of the rotation axis, and the rotation angle is determined by the mechanical turntable. However, in high-resolution measurements, the angle accuracy of the mechanical turntable is not sufficient for the measurement requirements. In this paper, a 3D profile registration method based on angle correction is proposed.This method constructs correlation function by using the self-profile of objects in the common area of different fields of view, and iterates accurate rotation angle by using reverse Gauss-Newton method, so as to achieve accurate registration of rotation scanning measurement. When the system calibration is completed, the proposed method only requires simple multi-angle scanning of the object to achieve high-precision full-surface measurement. Two sets of multi-FOV 3D shape measurement experiments were conducted, and the results demonstrate that the proposed method not only accurately corrects rotation angles but also offers advantages in simplicity and flexibility.更多还原