Lin Fu, Haibo Hong, Xi Wang, Gaobo Xiao, Mingjun Ren. Non-Lambertian Photometric Stereo Vision Based on Inverse Reflectance Model[J]. Acta Optica Sinica, 2020, 40(5): 0520001
- Acta Optica Sinica
- Vol. 40, Issue 5, 0520001 (2020)
Fig. 1. Ray angle diagram
Fig. 2. Relationship between nTv and observation of different materials. (a) Blue fabric; (b) brass; (c) specular white phenolic; (d) black obsidian
Fig. 3. Method framework
Fig. 4. Effects of elevation angle on the following factors. (a) Relative error of nTl; (b) overlapped region ratio; (c) condition number; (d) angular error of surface normal
Fig. 5. Rendered images of rabbit and ball model
Fig. 6. Comparison of normal vector recovery maps of four materials (from top to bottom: pvc, alum-bronze, ipswich-pine-221, color-changing-paint2)
Fig. 7. Comparison of four material normal vector angular errors (from top to bottom: pvc, alum-bronze, ipswich-pine-221, color-changing-paint2)
Fig. 8. Angular error of synthetic surface normal vector based on MERL dataset
Fig. 9. Device concept map
Fig. 10. Images of the copper bullet under four lights
Fig. 11. Bullet recovery normal map and bump map. (a) Recovery map of surface normal; (b) bump map
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Table 1. Angular errors of simulation(°)
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Table 2. Angular errors and computation time of real experiments
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