[1] GAO Yan-qi, ZHU Bao-qiang, LIU Dai-zhong, et al. Far field auto-alignment system used in SG-Ⅱ-Up system[J].Acta Physica Sinica, 2011, 60(6): 065204-1-065204-4.
[2] L Feng-nian, LIU Dai-zhong, XU Ren-fang, et al. Performance of image processing in beams automatic alignment system[J].Optical Technique, 2005, 31(3): 335-337.
[4] ZHAO Yi-yan. The study of auto-focus based on the intelligent control of stepping-motor[D].Taiyuan University of Technology, 2008.
[5] ZHANG Tao. Fast positioning study for stepping motor[D].North China University of Technology, 2012.
[6] WENG Fu-da, ZHOU Qi-hua. High-accuracy control method on the stepping motor closed-loop servo control system[J].Guidance & Fuze, 2013, 34(1): 13-17.
[7] IE Y, LONG X. CCD-area-based autocollimator for precision small-angle measurement[J].Review of Scientific Instruments, 2003, 74(3): 1362-1365.
[8] ZHANG Yu-jin. Image project (media ), image analysis[M].Beijing: Tsinghua University Press, 2005: 222-223.
[13] GONZALEZ C, WOODS R E. Digital image processing, Second edition[M].Publishing House of Electronics Industry, 2003.
[14] DA Zheng-shang, LI Dong-jian, ZHOU Wei, et al. Mathematical model for beam automatic fast alignment[J].Acta Photanica Sinica, 2008, 37(12): 2534-2538.
[15] XIE Yue, TANG Zhong, GUO Zhong-ping. Control arithmetic for cavity mirror and reflector in beams automatic alignment system[J].Information and Electronic Engineering, 2010, 8(1): 111-113.
[16] FAN Hong-shen, NI Guo-qiang, SHEN Hui-tang. Using ellipse properties to find eyes in binary image[J].Optical Technique, 2001, 27(4): 307-309.
[17] ZHANG Hai-ou, YU Yang, WANG Gui-lan. Visualization of morphologic characteristics of power/liquid plasma spray jets[J].Journal of Huazhong University of Science and Technology (Natural Science Edition), 2011, 39(1): 54-57.