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Volume 20 Issue 4
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Article Navigation >  LASER TECHNOLOGY  > 1996 >  20(4): 210-214

Citation:
shu

A pre-processing method of interference fringe pattern of transient flow field

  • 1.

    Dept. of Appl.Phy., Nanjing University of Sicence and Technology

  • Received Date: 1995-05-15
    Accepted Date: 1996-03-22
  • With a CCD camera,the time sequence pictures of a transient flow field can be taken up.In order to analysis of the dynamic parameters of the field,it is necessary to make the pre processing of the pictures.This paper introduces a pre processing method including the portioning sharpening,vicinity average filtering,bit mapping,Hilditch linking.Especially,a branch eliminating is used for obtaining the continuous interference lines pattern.This method is well satisfied with the requirement of automatical data processing.
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  • [1] 赞诺尼C A.一种新的半自动的干涉图判读技术(A.H.G uent her an d D.H.Liebenberg,ed.).光学干涉图的处理与判读.北京:机械工业出版社,1986:27
    [2]

    Hilditch C J.Linearskelet ons from square cupboards,Machine Intelligence IV,B.Meltzer,Edinburgh:University Press,403
    [3]

    Stefanelli R,Rosenfield.Some parallel thinning algorithms for digital pictures,J Assoc Comput March,1971;18(2):255
    [4] 王煦法,庄镇泉,王东生.C语言图象处理程序设计.合肥:中国科学技术大学出版社,1994:253,266,271
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A pre-processing method of interference fringe pattern of transient flow field

  • 1. Dept. of Appl.Phy., Nanjing University of Sicence and Technology
  • Received Date: 1995-05-15
  • Accepted Date: 1996-03-22
  • Available Online: 1996-07-25

Abstract: With a CCD camera,the time sequence pictures of a transient flow field can be taken up.In order to analysis of the dynamic parameters of the field,it is necessary to make the pre processing of the pictures.This paper introduces a pre processing method including the portioning sharpening,vicinity average filtering,bit mapping,Hilditch linking.Especially,a branch eliminating is used for obtaining the continuous interference lines pattern.This method is well satisfied with the requirement of automatical data processing.

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