Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on the Phase Measuring Profilometry with Parallel-optical-axes

평행 광축에서의 위상측정 형상측정법에 관한 연구

  • 정경민 (선문대학교 기계 및 제어공학부) ;
  • 박윤창 (선문대학교 기게 및 제어공학) ;
  • 박경근 (선문대학교 기계공학과 대학원)
  • Published : 2000.06.01
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Abstract

Noncontact measuring methodology of 3-dimensional profile using CCD camera are very attractive because of it's high measuring speed and it's high sensitivity. Especially when projecting a grid pattern over the object, the captured image have 3 dimensional information of the object. Projection moire extract 3-D information with another grid pattern in front of CCD camera. However phase measuring profilometry(PMP) obtain similar results without additional grid pattern. In this paper, the projection moire are compared with the PMP mathematically, and it is shown that PMP can generate moire image with simple mathematical computations. Experimental works are also carried out showing the same results. It is shown that using a single gird pattern, moire image can be obtained directly without any mathematical operation when some conditions are satisfied.

Keywords

References

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