[1] Y DONG, C FANG, L ZHU et al. The calibration method of the circle-structured light measurement system for inner surfaces considering systematic errors. Measurement Science and Technology, 32, 075012(2021).

[2] Y MASAYUKI, K TEPPEI, K TOMOAKI. Digital holographic inspection for the inner surface of a straight pipe using current-induced multiwavelength from two laser diodes. Optical Engineering, 53, 104103(2014).

[3] Tao LIU, Zhibin WANG, Jiaqi HU et al. Large field white light interferometry system and performance study. Acta Photonica Sinica, 53, 0112003(2024).

[4] S PAN, X SHAO, H WANG et al. A three-dimensional reconstruction method for the inner surface of a deep hole using a rotating mechanism. The Review of Scientific Instruments, 92, 105010(2021).

[5] Zhaowen CAO, Ziwei XU, Kuaisheng ZOU. Study on long distance beam width of blue ray structure. Acta Photonica Sinica, 49, 0814002(2020).

[6] Zhizhuo WANG, Rongsheng LU. High-reflective surface shape measurement technology based on multiple viewpoints and stripes. Acta Photonica Sinica, 52, 0912001(2023).

[7] Delin CHEN, Fei HAO, Jingjing SHI et al. Introduction to 3D visual measurement methods. Instrument Technology, 21-24(2019).

[8] Lu YE, Xiangchao ZHANG, Junhua WANG et al. High-precision deflection measurement technology based on the external optical appendix pinhole camera. Acta Photonica Sinica, 52, 1212003(2023).

[9] K RAGHU, B GLEN. Improving 3D surface measurement accuracy on metallic surfaces, 5856, 618-624(2005).

[10] Guangjun ZHANG, Junji HE. A 3D visual detection model of the inner surface based on circular structure light. Journal of Instrumentation, 481-484(2004).

[11] Ying WANG, Yuan ZHANG. A method for circular calibration based on planar targets. Infrared and Laser Engineering, 42, 174-178(2013).

[12] Y ZHU, Y GU, Y JIN et al. Flexible calibration method for an inner surface detector based on circle structured light. Applied Optics, 55, 1034-1039(2016).

[13] Zhonghu LI, Kang LI, Junhong YAN et al. Study on the defect detection method of the inner surface of the pipeline based on the circular structure light. Computer Simulation, 37, 368-372(2020).

[14] L XIAO, H OUYANG, C FAN. An improved Otsu method for threshold segmentation based on set mapping and trapezoid region intercept histogram. Optik, 196, 163106(2019).

[15] Jiali ZHANG. Study of clustering methods based on improved DBSCAN(2023).

[16] C STEGER. An unbiased detector of curvilinear structures. IEEE Transactions on Pattern Analysis and Machine Intelligence, 20, 113-125(1998).

[17] Zehao WANG, Zhongwei ZHANG. Adaptive orientation template line structure light stripe center extraction method. Laser Magazine, 38, 60-64(2017).