光学三维形貌测量技术具有无损、快速、高精度等优势，被广泛应用于不同领域。工业生产及现实生活中的镜面/漫反射复合表面三维形貌的快速、高精度测量一直是未解决的难题。提出一种基于条纹投影和双屏透射显示的镜面/漫反射复合表面测量方法，并对系统的非线性响应进行了补偿。首先，普通屏和透明屏分别显示绿色条纹，被镜面部分反射，投影仪投射蓝色正弦条纹图到漫反射部分；其次，相机采集不同颜色的变形条纹图；然后，三维标定获取系统参数，通过相位与深度的关系恢复物体的三维形貌；最后，校正系统的非线性响应误差并进行补偿，提高三维测量精度。实验结果表明：该方法能够实现非连续复合表面物体三维形貌的高精度测量。

Optical three-dimensional (3D) topography measurement technology has been widely used in different fields because of its non-destructive, rapid, high precision, and other advantages. Rapid and accurate measurements of the 3D morphology of specular/diffuse composite surfaces in industrial production have been an unsolved problem. In this study, a method for specular/diffuse composite surface measurements based on fringe projection and dual-screen transmission display is proposed, and the nonlinear response of the system is compensated. First, the normal and transparent screens display green stripes, which are partially reflected by the mirror. In addition, the projector projects a blue sinusoidal stripe pattern to the diffuse part. Second, the camera captures the deformed fringe patterns of different colors. Subsequently, the system parameters are obtained via 3D calibration, and the 3D morphology of the object is recovered based on the relationship between phase and depth. Finally, the nonlinear response error of the system is corrected and compensated to improve the accuracy of 3D measurements. The experimental results show that the proposed method can achieve high-precision measurements of the 3D topography for discontinuous composite surface objects.