[1] Miguel Asmad.Experimental study of the surface roughness in metals with different surface finishing by two dimensional correlation of speckle pattern[J].SPIE,2004,5622:1495-1500.
[2] Yamaguchi I.A laser-speckle strain gauge[J].Journal of Physics (E):Scientific Instruments,1981,14(11):1270-1273.
[3] Peter W H,Ranson W F.Digital imaging technique in experimental stress analysis[J].Opt Eng,1982,21(3):427-431.