国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

In this paper, an on-line phase measurement profilometry of composite grating projection is proposed to solve the contradiction between different requirements of fringe frequency in the process of pixel matching and phase calculation. In the pixel matching process, high-frequency information is extracted to obtain a high-quality modulation pattern; in the phase calculation process, low-frequency components are extracted through filtering for the three-dimensional reconstruction of the measured object, to avoid the error caused by high-frequency components. In the filtering process, a combined filtering window is designed in this paper to improve the filtering accuracy. Simulation and experiment prove the validity and feasibility of the proposed method. The error of the reconstructed object by this method is about 0.89%.