基于数字投影仪的PMP系统非线性误差分析  

Error analysis of nonlinearity in digital PMP

作　　者：应朝福[1,2] 苏显渝[2] 刘元坤[2] 

机构地区：[1]浙江师范大学信息光学研究所,浙江金华321004 [2]四川大学光电科学技术系,四川成都610064

出　　处：《浙江师范大学学报（自然科学版）》2008年第4期401-405,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(60527001);浙江省自然科学基金资助项目(Y105030)

摘　　要：在相位测量轮廓术中,探测器的非线性响应是影响测量精度的重要因素.对该误差进行了理论分析,结果表明,通过增加相移帧数可以有效地减小非线性效应的影响,而且计算机模拟和实测证实:在基于数字投影设备的相位测量轮廓术中,当相移帧数为条纹周期的1/2时,非线性效应的影响可被很好地抑制.该结果可为实际应用中合理地选择相移算法提供理论依据.In Phase Measuring Profilometry, detector nonlinearity had been one of the main factors introducing the errors of the measurement. The theoretical analysis of this kind of error was given. The results confirmed that the nonlinearity effect would be reduced by increasing of phase-shift number. Moreover in digital PMP system, computer simulation and real data showed the error would be dramatically reduced if the phase-shift number was half of the fringe period. The results provided a theoretical basis for algorithms selection.

关 键 词：信息光学 相位测量轮廓术 相移算法 非线性响应 

分 类 号：TN247[电子电信—物理电子学]