In order to simply obtain the phase of a surface in phase measuring profilometry (PMP), a fully automatic phase unwrapping method based on projected double spatial frequency fringes has been deduced.

• 为了在相位轮廓测量术中更简便可靠地获取待测面的相位场，提出了一种利用双频投影条纹的叠栅特性进行全自动相位解包裹的方法。