[1] FAN Jiechuan[M]. Modern flow visualization(2002).

[2] MEIER G E A. New optical tools for fluid mechanics[J]. Sadhana, 23, 557-567(1998).

[3] RICHARD H, RAFFEL M. Principle and applications of the background oriented schlieren (BOS) method[J]. Measurement Science & Technology, 12, 1576-1585(2001).

[4] RAMANAH D, RAGHUNATH S, MEE D J et al. Background oriented schlieren for flow visualisation in hypersonic impulse facilities[J]. Shock Waves, 17, 65-70(2007).

[5] VENKATAKRISHNAN L, MEIER G E A. Density measurements using the background oriented schlieren[J]. Experiments in Fluids, 37, 237-247(2004).

[6] HARGATHER M J, SETTLES G S. Natural-background-oriented schlieren imaging[J]. Experiments in Fluids, 48, 59-68(2010).

[7] GOLDHAHN E, SEUME J. The background oriented schlieren technique: sensitivity, accuracy, resolution and application to a three-dimensional density field[J]. Experiments in Fluids, 43, 241-249(2007).

[8] GOJANI A B, OBAYASHI S. Assessment of some experimental and image analysis factors for background-oriented schlieren measurements[J]. Applied Optics, 51, 7554-7559(2012).

[9] YEVTIKHIYEVA O A, SKORNYAKOVA N M, UDALOY A V. An investigation of the error of the background schlieren method[J]. Measurement Techniques, 52, 1300-1305(2009).

[10] TIAN Lifeng, YI Shihe, ZHAO Yuxin et al. Aero-optical wavefront measurement technique based on BOS and its applications[J]. Chinese Science Bulletin, 56, 1515-1521(2011).

[11] ZHANG Yue, WANG Xu, SU Yun et al. High-precision atmospheric disturbance detection method for moving objects[J]. Acta Optica Sinica, 41, 0228002(2021).

[12] ATCHESON B, HEIDRICH W, IHRKE I. An evaluation of optical flow algorithms for background oriented schlieren imaging[J]. Experiments in Fluids, 46, 467-476(2009).

[13] HORN B K, SCHUNCK B. Determining optical flow[J]. Aritficial Intelligence Laboratory, 7, 185-203(1981).

[14] LUCAS B D, KANADA T. An iterative image registration technique with an application to stereo vision[C], 674-679(1981).

[15] GOODMAN J W[M]. Speckle phenomena in optics: theory and applications. CAO Qizhi, CHEN Jiabi, transl, 310-312(2009).

[16] FARNEBACK G. Polynomial expansion for orientation and motion estimation[J]. Linköping University Sweden(2002).

[17] WEINZAEPFEL P, REVAUD J, HARCHAOUI Z et al. Deepflow: large displacement optical flow with deep matching[C], 1385-1392(2013).

[18] WULFF J, BLACK M J. Efficient sparse-to-dense optical flow estimation using a learned basis and layers[C], 120-130(2015).

[19] ZACH C, POCK T, BISCHOF H. A duality based approach for realtime TV-L1 optical flow[C], 214-223(2007).

[20] SUN Lin, WU Ling, CHEN Niannian. Comparison of Hartmann wavefront reconstruction algorithm based on Fourier transform[J]. Laser Journal, 40, 52-57(2019).