[1] He F Q. Research and application of visual inspection technology for the large area of leather surface[D]. Hangzhou: Zhejiang University(2012).

[2] Wang S G. Research and design of led light source for machine vision[D]. Beijing: University of Chinese Academy of Sciences(2015).

[3] Vaidelien G, Valantinas J. The use of Haar wavelets in detecting and localizing texture defects[J]. Image Analysis & Stereology, 35, 195-201(2016).

[4] Li C R, Huang Y Y, Zhu L H. Color texture image retrieval based on Gaussian copula models of Gabor wavelets[J]. Pattern Recognition, 64, 118-129(2017). http://www.sciencedirect.com/science/article/pii/S0031320316303478

[5] Wu R M. Research on the design method of free form illumination[D]. Hangzhou: Zhejiang University(2013).

[6] Li X, Huang Y F, Tan Y Q et al. Optimization method for compact lighting system based on SelPSO algorithm[J]. Journal of Applied Optics, 37, 595-601(2016).

[7] Wang J W, Su Z P, Yuan Z J et al. Study on uniformity of LED array illumination distribution on target plane[J]. Acta Photonica Sinica, 43, 0822004(2014).

[8] Tan Y Q, Li P, Li X et al. Optimization of double freeform-surface lens with large view angle based on BreedPSO algorithm and overlapping method[J]. Optical Technique, 44, 123-128(2018).

[9] Tan Y Q, Li P, Li X et al. Optimization of double freeform-surface lens with large view angle based on BreedPSO algorithm and overlapping method[J]. Optical Technique, 44, 123-128(2018).

[10] Zhu Z, Qu X H, Liang H Y et al. Uniform illumination study by light-emitting diode ring array and diffuse reflection surface[J]. Acta Optica Sinica, 31, 0115001(2011).

[11] Dong J T. Optical design of color light-emitting diode ring light for machine vision inspection[J]. Optical Engineering, 50, 043001(2011). http://spie.org/Publications/Journal/10.1117/1.3567053

[12] Hao F, Shi J F, Zhu S Q et al. Optimal positioning of forward installed square LED arrays for machine vision system[J]. Acta Optica Sinica, 34, 1215001(2014).

[13] Xu Y Y, Jing X L, Ding J G et al. Reflector design for LED based on uniform illumination[J]. Optical Technique, 38, 345-349(2012).

[14] Wang X L. LED ring array light source design and uniform illumination properties analysis[J]. Optik, 140, 273-281(2017). http://www.sciencedirect.com/science/article/pii/S0030402617304400

[15] Whang A J W, Chen Y Y, Teng Y T. Designing uniform illumination systems by surface-tailored lens and configurations of LED arrays[J]. Journal of Display Technology, 5, 94-103(2009). http://ieeexplore.ieee.org/document/4786397/

[16] Su Z P, Xue D L, Ji Z C. Designing LED array for uniform illumination distribution by simulated annealing algorithm[J]. Optics Express, 20, A843-A855(2012). http://europepmc.org/abstract/MED/23326832

[17] Moreno I, Muñoz J, Ivanov R. Uniform illumination of distant targets using a spherical light-emitting diode array[J]. Optical Engineering, 46, 033001(2007). http://spie.org/Publications/Journal/10.1117/1.2715562

[18] Zheng Z R, Hao X, Liu X. Freeform surface lens for LED uniform illumination[J]. Applied Optics, 48, 6627-6634(2009). http://www.ncbi.nlm.nih.gov/pubmed/20011002

[19] Gao Y, Xie S L. Particle swarm optimization algorithms based on simulated annealing[J]. Computer Engineering and Applications, 40, 47-50(2004).

[20] Ghoshal S P. Optimizations of PID gains by particle swarm optimizations in fuzzy based automatic generation control[J]. Electric Power Systems Research, 72, 203-212(2004). http://www.sciencedirect.com/science/article/pii/S0378779604001099

[21] Chen G F. Research of function optimization of PSO based on simulated annealing[D]. Changsha: Central South University(2013).

[22] Su G Y, Qu X H, Zhang F M. Experiments on metal surface characteristics' effect on differential visual measurement[J]. Acta Optica Sinica, 33, 0115001(2013).