Cheng YANG, Zhao WANG, Junhui HUANG, Chao XING. Random Speckle Projection Image Acquisition Method for Coarse-grained Reflective Surface[J]. Acta Photonica Sinica, 2022, 51(3): 0310004
- Acta Photonica Sinica
- Vol. 51, Issue 3, 0310004 (2022)
Fig. 1. Reflections of zinc oxide nanoparticles
Fig. 2. Image acquisition system
Fig. 3. Generation process of random speckle projection group images
Fig. 4. The positional relationship between the projection light source and the workpiece
Fig. 5. Perspective distortion stereoscopic model
Fig. 6. Horizontal tilt projection distortion model
Fig. 7. The distortion relation between the generated projected image and the actual projected image in Y axis direction
Fig. 8. Distortion correction algorithm flow
Fig. 9. Intermediate process of trapezoidal distortion correction algorithm
Fig. 10. Isometric dot map projection correction
Fig. 11. The image acquisition experimental platform
Fig. 12. Random speckle projection group image fusion
Fig. 13. Workpiece samples images acquired in different light sources
Fig. 14. Detailed comparison of workpiece samples images acquired in different light sources
Fig. 15. Comparison of grayscale histogram
Fig. 16. Image contrast comparison in different light sources
Fig. 17. Comparison of character recognition detection results
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