Qing Dai, Ping Sun, Zhifang Lei, Yuxin Tang. Surface Shape Measurement Technique Using Fringe-Based Optical Flow[J]. Acta Optica Sinica, 2019, 39(11): 1112004
- Acta Optica Sinica
- Vol. 39, Issue 11, 1112004 (2019)
Fig. 1. Typical light path for three-dimensional surface shape measurement using fringe-projection method
Fig. 2. Spherical crown to be measured
Fig. 3. Simulated fringe patterns. (a) Original fringes; (b) modulated fringes
Fig. 4. Results of surface simulation. (a) Calculated value; (b) comparison between theoretical and calculated values on cross section at y =256 pixel; (c) relative error between theoretical and calculated values on cross section at y =256 pixel
Fig. 5. Simulated irregular fringe patterns. (a) Fringes before deformation; (b) fringes after deformation
Fig. 6. Results of optical flow method using irregular fringe patterns. (a) Calculated surface shape distribution; (b) comparison between theoretical and calculated values on the cross section at y =256 pixel; (c) relative error between theoretical and calculated values on cross section at y =256 pixel
Fig. 7. Fringes in experiment. (a) Fringes before modulation; (b) fringes after modulation
Fig. 8. Phase distributions of mask. (a) Phase shift method; (b) optical flow method
Fig. 9. Three-dimensional phase distributions of surface shape of mask. (a) Phase shift method; (b) optical flow method; (c) comparison of results calculated by phase shift method and optical flow method on cross-section at y =290 pixel
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20