[1] Cai Yiheng, Zhang Linlin, Sheng Nan. 3D reconstruction of tongue surface based on photometric stereo method[J]. Journal of Electronics Information Technology, 2015, 37(11):2565-2570. (in Chinese)
[2] Shen Lansun, Cai Yiheng, Liu Changjiang. Recent advances in TCM tongue manifestation information acquisition and analysis[J]. World Science and Technology/Modernization of Traditional Chinese Medicine and Material Medical, 2007, 9(5):97-101. (in Chinese)
[3] Qi Zhen, Xu Jiatuo, Zhang Zhifeng. Progress in clinical application of tongue inspection objectivity based on digital image processing technique[J]. China Journal of Traditional Chinese Medicine and Pharmacy, 2015(8):2849-2851. (in Chinese)
[4] Pang B, Zhang D, Wang K. The bi-elliptical deformable contour and its application to automated tongue segmentation in Chinese medicine[J]. IEEE Transactions on Medical Imaging, 2005, 24(8):946.
[5] Liu L L, Zhang D. Extracting tongue cracks using the wide line detector[C]//International Conference on Medical Biometrics. Springer-Verlag, 2008:49-56.
[6] Lv H J, Cai Y H, Guo S. 3D reconstruction of tongue surface based on photometric stereo[C]//ICSP2012 Proceedings, 2012:1668-1671.
[7] Wang Peng, Shi Ruize, Zhong Xiaofeng. 3D scanning measurement system based on double-line projection and the line-plane constraint[J]. Infrared and Laser Engineering, 2017, 46(4):0427001. (in Chinese)
[8] Zhao T, Li H, Cai Q, et al. Point cloud segmentation based on FPFH features[C]//Proceedings of 2016 Chinese Intelligent Systems Conference, 2016, 405:978-981.
[9] Rusu R B. Semantic 3D object maps for everyday manipulation in human living environments[J]. KI-Knstliche Intelligenz, 2010, 24(4):345-348.
[10] Rusu R B, Blodow N, Beetz M. Fast point feature histograms (FPFH) for 3D registration[C]//IEEE International Conference on Robotics and Automation, 2009:1848-1853.
[11] Wu Yingchun, Cao Yiping, Xiao Yanshan. On-line three-dimensional inspection using randomly phase-shifting fringe based on least-square iteration[J]. Optics and Precision Engineering, 2014, 22(5):1347-1353. (in Chinese)
[12] Yuan Xiaocui, Wu Lushen, Chen Huawei. Normal estimation of scattered point cloud with sharp feature[J]. Optics and Precision Engineering, 2016, 34(10):2581-2588. (in Chinese)