中国激光, 2011, 38 (12): 1208004, 网络出版: 2011-11-23
条纹投影轮廓术中新的相位高度映射算法
A New Phase-to-Height Mapping Algorithm in Fringe Projection Profilometry
测量 三维面形测量 条纹投影轮廓术 相位高度映射 校准 简化 measurement three-dimensional shape measurement fringe projection profilometry phase-to-height mapping calibration simplifying
摘要
提出一种新的更具普适性的相位高度映射关系,测量中无需考虑系统双瞳连线是否与参考面平行以及成像系统光轴是否与参考面垂直。该映射关系有效地将待标定系数与标定采样点的像素坐标分离开来,系统校准时只需标定与采样点坐标位置无关的常系数,大大减少标定采样点数目,且在校准过程中只需2个标定平面。实验证实了该方法的有效性和正确性。
Abstract
A novel and universal mathematical description of the phase-to-height mapping relationship under divergent illumination is presented, which meets the condition of the imaging system axes being not perpendicular to the reference plane and the link of system′s two pupils being not parallel to the reference plane. In the proposed method, the undetermined coefficients are separated from the coordinate system, which are independence to the coordinate system, so the amount of sampling points for calibration is reduced greatly, and only two calibration planes are required. The experiment has verified the feasibility and validity of the proposed method.
肖焱山, 曹益平, 武迎春. 条纹投影轮廓术中新的相位高度映射算法[J]. 中国激光, 2011, 38(12): 1208004. Xiao Yanshan, Cao Yiping, Wu Yingchun. A New Phase-to-Height Mapping Algorithm in Fringe Projection Profilometry[J]. Chinese Journal of Lasers, 2011, 38(12): 1208004.