[1] SI Q,CAI H Y,HUANG Z H,et al.Design of a real-time acquisition system of CMOS image based on USB2.0[J].Electronic Measurement Technology,2007,30(4):117-119(in Chinese).
[2] LU Z Q.C/C++image processing program[M].Beijing:Tsinghua University Press,2005:184-221(in Chinese).
[3] OTSU N.A threshold selection method from gray-level histograms[J].IEEE Transactions on Systems,Man and Cybernetics,1979,9(1):62-66.
[4] HAN S Q,WANG L.A survey of thresholding methods for image segmentation[J].Systems Engineering and Electronics,2002,24(6):91-94(in Chinese).
[5] ZHANG X H,YANG K T.An improved 2-D hough transform method for extracting laser spot parameter[J].Laser Infrared,2006,36(10):995-997(in Chinese).
[6] WANG H F,WANG D B,LIU S Q.Research on auto ldentify and measurement approach of laser target image[J].Laser Infrared,2007,37(6):564-566(in Chinese).
[7] ZHONG Z L,ZHOU B,HE Y Q,et al.Laser spot location in imaging laser detecting systems[J].Laser Technology,2008,32(3):248-251(in Chinese).
[8] SUN A X,WANG J,HE H X,et al.Testing precision analysis of centrobaric of laser facula[J].Laser Technology,2004,28(6):667-679(in Chinese).
[9] YANG J X,ZHUANG Y F,SHEN W X,et al.Precise measurement of the effective area of laser spot[J].High Power Laser and Particle Beams,2004,16(10):1263-1266(in Chinese).