Infrared and Laser Engineering, Volume. 46, Issue 9, 917001(2017)
Review of fringe-projection profilometry and phase measuring deflectometry
Fringe-projection profilometry and phase measuring deflectometry can realize high accurate measurement of three-dimensional shape, which has good development prospect in the full field three-dimensional profilometry. First, the measuring principles of fringe-projection profilometry and phase measuring deflectometry were introduced. Moreover, the technologies of phase extracting and camera calibration in fringe-projection profilometry and phase measuring deflectometry were also especially emphasized, which were key technologies. Then the similarities and differences of fringe-projection profilometry and phase measuring deflectometry were compared. What′s more, the development direction and problems to be solved of enhancing the measurement accuracy and speed in fringe-projection profilometry and phase measuring deflectometry were introduced. In order to improve the measurement accuracy, main methods can be divided as follows: correcting the the Gamma effect of a digital projector and a digital camera, improving the phase extraction accuracy of the fringes, enhancing the camera calibration accuracy, phase-height/gradient calibration accuracy and other means. In order to improve the measurement speed, the phase extraction speed and the phase unwrapping speed were improved.
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Liu Dong, Yan Tianliang, Wang Daodang, Yang Yongying, Huang Wei. Review of fringe-projection profilometry and phase measuring deflectometry[J]. Infrared and Laser Engineering, 2017, 46(9): 917001
Category: 光电测量
Received: Jan. 10, 2017
Accepted: Feb. 20, 2017
Published Online: Nov. 17, 2017
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