【摘要】 根据投影栅相位法三维检测实际应用中所遇到的频域处理的移频问题和被测物体与参考面的对应关系问题，分析了它们对解相精度的影响，提出了不移频和全场参考面的解决方法。经实例验证，它们在工程应用中取得了满意的效果。更多还原

【Abstract】 The problems are analysed in practical 3D detection by phase approaching of projected grating that frequency moving in frequency domain and the correspondence between measured surface and reference plane have great effect on the accuracy of phase demodulating. An appropriate method for avoiding frequency moving and a new concept of full field reference plane are proposed. Their perfect perfomance has been verified.更多还原