[1] Wang G H, Han J Q, Zhang X M. A fast shape from shading method for diffuse surfaces[J]. Journal of Xi’an Jiaotong University, 43, 7-10, 21(2009).

[2] Wang G H, Song Y G. A fast viscosity solution algorithm of shape from shading for non-Lambertian surfaces[J]. Chinese Journal of Scientific Instrument, 36, 1577-1583(2015).

[3] Horn B K P. Height and gradient from shading[J]. International Journal of Computer Vision, 5, 37-75(1990).

[4] Fu L, Hong H B, Wang X et al. Non-Lambertian photometric stereo vision based on inverse reflectance model[J]. Acta Optica Sinica, 40, 0520001(2020).

[5] Yang L, Li E, Long T et al. A welding quality detection method for arc welding robot based on 3D reconstruction with SFS algorithm[J]. The International Journal of Advanced Manufacturing Technology, 94, 1209-1220(2018). http://link.springer.com/10.1007/s00170-017-0991-9

[6] Lei L, Li J H, Liu M Q et al. Shape from shading and optical flow used for 3-dimensional reconstruction of endoscope image[J]. Acta Oto-Laryngologica, 136, 1190-1192(2016). http://europepmc.org/abstract/MED/27310612

[7] Turan M, Pilavci Y Y, Ganiyusufoglu I et al. Sparse-then-dense alignment-based 3D map reconstruction method for endoscopic capsule robots[J]. Machine Vision and Applications, 29, 345-359(2018). http://link.springer.com/article/10.1007/s00138-017-0905-8

[8] Hu J F, Zheng W S, Xie X H et al. Sparse transfer for facial shape-from-shading[J]. Pattern Recognition, 68, 272-285(2017). http://smartsearch.nstl.gov.cn/paper_detail.html?id=c0e05d37e22f50b9f80f8d0f08e800d3

[9] Kumar A, Kwong C. Towards contactless, low-cost and accurate 3D fingerprint identification[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 37, 681-696(2015). http://doi.ieeecomputersociety.org/10.1109/TPAMI.2014.2339818

[10] Liu W C, Wu B. An integrated photogrammetric and photoclinometric approach for illumination-invariant pixel-resolution 3D mapping of the lunar surface[J]. ISPRS Journal of Photogrammetry and Remote Sensing, 159, 153-168(2020). http://www.sciencedirect.com/science/article/pii/S0924271619302771

[11] Zhang R, Tsai P S, Cryer J E et al. Shape from shading: a survey[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 21, 690-706(1999). http://www.computer.org/csdl/trans/tp/1999/08/i0690-abs.html

[12] Durou J D, Falcone M, Sagona M. Numerical methods for shape-from-shading: a new survey with benchmarks[J]. Computer Vision and Image Understanding, 109, 22-43(2008). http://dl.acm.org/citation.cfm?id=1326363.1326482&coll=DL&dl=GUIDE&CFID=358224594&CFTOKEN=68986793

[13] Wang G H, Han J Q, Zhang X M et al. A new shape from shading algorithm for hybrid surfaces[J]. Journal of Astronautics, 32, 1124-1129(2011).

[14] Ahmed A H, Farag A A. Shape from shading under various imaging conditions[C]∥2007 IEEE Conference on Computer Vision and Pattern Recognition, June 17-22, 2007, Minneapolis, MN, USA., 1-8(2007).

[15] Ahmed A H, Farag A A. Shape from shading for hybrid surfaces[C]∥2007 IEEE International Conference on Image Processing, September 16-19, 2007, San Antonio, TX, USA., 525-528(2007).

[16] Ward G J. Measuring and modeling anisotropic reflection[J]. ACM SIGGRAPH Computer Graphics, 26, 265-272(1992). http://doi.ieeecomputersociety.org/resolve?ref_id=doi:10.1145/142920.134078&rfr_id=trans/tg/2005/05/ttg2005050550.htm

[17] Tozza S, Falcone M. Analysis and approximation of some shape-from-shading models for non-Lambertian surfaces[J]. Journal of Mathematical Imaging and Vision, 55, 153-178(2016).

[18] Phong B T. Illumination for computer generated pictures[J]. Communications of the ACM, 18, 311-317(1975). http://www.researchgate.net/publication/242373779_Illumination_for_computer_grenerated_images

[19] Vogel O, Breuß M, Weickert J. Perspective shape from shading with non-Lambertian reflectance[M]. ∥Rigoll G. Pattern recognition. Lecture notes in computer science. Berlin: Springer, 5096, 517-526(2008).

[20] Vogel O, Cristiani E. Numerical schemes for advanced reflectance models for shape from shading[C]∥2011 18th IEEE International Conference on Image Processing, September 11-14, 2011, Brussels, Belgium., 5-8(2011).

[21] Huang S, Hu Y, Gong C L et al. High precision three-dimensional face reconstruction algorithm based on gradient light image[J]. Acta Optica Sinica, 40, 0410001(2020).

[22] Blinn J F. Models of light reflection for computer synthesized pictures[J]. ACM Siggraph Computer Graphics, 11, 192-198(1977). http://doi.ieeecomputersociety.org/resolve?ref_id=doi:10.1145/965141.563893&rfr_id=mags/cg/1987/01/mcg1987010044.htm

[23] Wang G H, Han J Q, Jia H H et al. Fast viscosity solutions for shape from shading under a more realistic imaging model[J]. Optical Engineering, 48, 117201(2009). http://spie.org/x648.html?product_id=855474

[24] Wang G H, Han J Q, Zhang X M. Three-dimensional reconstruction of endoscope images by a fast shape from shading method[J]. Measurement Science and Technology, 20, 125801(2009). http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009MeScT..20l5801W&db_key=PHY&link_type=ABSTRACT