Phase shifting calibrated with digital image correlation method

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Original languageEnglish
Article number95
Pages (from-to)599-607
Journal / PublicationProceedings of SPIE - The International Society for Optical Engineering
Volume5852 PART II
Publication statusPublished - 2005


TitleThird International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics
Period29 November - 1 December 2004


Three-dimensional (3D) shape measurement can be accurately performed using sinusoid grating projection. However, the projection technique requires very accurate phase shifting of the grating. A method for phase shifting calibration which utilizes gray value correlation of image patterns is presented. The method enables calibration to be performed at sub-pixel accuracy. Experiments were carried out to verify the proposed calibration method.

Research Area(s)

  • 3D measurement, Calibration, Digital image correlation, Displacement, Phase-shifting