[1] [1] I Yamaguchi. A laser-speckle straingauge[J]. Journal of Physics, 1981, 14(11): 1270-1273.

[2] [2] Peters W H, Ranson W F. Digital imaging techniques in experimental mechanics[J]. Optical Engineering, 1982, 21(3): 427-437.

[3] [3] Liang Zhijing, Wang Kaifu, Gu Guoqing, et al. Digital speckle image correlation method base on particle swarm optimization algorithm[J]. Laser Technology, 2014, 38(5): 603-607. (in Chinese)

[4] [4] Pan B, Yu L P, Wud F. High-accuracy 2D digital image correlation measurements with bilateral telocentric lenses: error analysis and experimental verification[J]. Experimental Mechanics, 2013, 53(9): 1719-1733.

[5] [5] Wang B, Pan B. Random errors in digital image correlation due to matched or overmatched shape functions[J]. Experimental Mechanics, 2015, 55(9): 1717-1727.

[6] [6] Zhou Chanlin, Qi Dongping. Frequency domain digital speckle correlation method and its applications[J]. Opto-Electronic Engineering, 2000, 27(3): 65-68. (in Chinese)

[7] [7] Yang Yuhang, Chen Yu, Li He, et al. In-plane micro-displacement measurement based on digital speckle correlation method in frequency domain[J]. Infrared and Laser Engineering, 2014, 43(4): 1301-1305. (in Chinese)

[8] [8] Ying Yuzheng, Shi Qinyun. Fractional box-counting and fractal dimension estimation[J]. PR & AI, 1997, 10(4): 357-361.

[9] [9] Zhang Yuying, Mao Zhongming. Image magnification with fractal interpolation based on wavelet transformation[J]. Computer Engineering and Design, 2006, 27(18): 3248-3430. (in Chinese)

[10] [10] Zhou P, Goodson K E. Sub-pixel displacement and deformation gradient measurement using digital image speckle correlation (DISC)[J]. Optical Engineering, 2001, 40(8): 1613-1620.

[11] [11] Yu Zhijing, Tao Hongwei. Investigation of the optimal light condition on digital image correlation method[J]. Laser & Optoelectronics Progress, 2014, 51(11): 101201. (in Chinese)

[12] [12] Pan Bing, Chen Ding, Feng Juan. Sub-pixel registration using quadratic surface fitting in digital image correlation[J]. Acta Metrological Sinica, 2005, 26(2): 128-134. (in Chinese)