Peng Wang, Jiaqi Liu, Changku Sun, Baoshang Zhang. Correction of Gamma nonlinearity method by orthogonal fringe order subregional precoding[J]. Infrared and Laser Engineering, 2022, 51(6): 20210503
- Infrared and Laser Engineering
- Vol. 51, Issue 6, 20210503 (2022)
Fig. 1. 3D measurement principle of digital fringe projection
Fig. 2. Gamma nonlinear gray response curve
Fig. 3. Effect of two precoding models
Fig. 4. Gamma distribution
Fig. 5. Schematic diagram of level division of fringe pattern
Fig. 6. Effect picture of 81 fringe pattern after precoding correction
Fig. 7. Comparison of fringes generated by different correction methods and fringe gray images collected
Fig. 8. Phase difference plane partial graph
Fig. 9. Reconstruction results of measurement disk
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Table 1. Phase error results
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