[5] Xiong Yalin,Sharer Steven A.Depth from focusing and defocusing[A].Pmc.of IEEE Conf.on Computer Vision andPattern Recognition[C].New York:IEEE,1993:68-73.

[7] Liang Cni-ping,Qmo Yan-feng.The auto-focusing precision analysis of the phase method in the theodolite[A].Prue.of ISTM/2005 6th international symposium on test and measurement[C].Dalian:[S.1.],2005:4487-4490.

[8] Cox J Allen.Evaluation of peak location algorithms with subpixel accuracy for mosaic focal plane[J].SPIE,1981,292:288-299.