• Acta Optica Sinica
  • Vol. 26, Issue 11, 1636 (2006)
[in Chinese]*, [in Chinese], and [in Chinese]
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  • [in Chinese]
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    [in Chinese], [in Chinese], [in Chinese]. Three-Dimensional Shape Measurement for Specular Surface Based on Fringe Reflection[J]. Acta Optica Sinica, 2006, 26(11): 1636 Copy Citation Text show less

    Abstract

    A novel three-deimensional shape measurement method for specular surface, based on fringe reflection and phase shift is presented. A sinusoidal fringe is displayed on a plane monitor, and then the images will be recorded by a CCD camera after reflected by the tested and standard surfaces, respectively. The difference between the tested surface and standard surface is obtained as soon as the phase distributions are worked out by phase shift. Then the shape of the tested surface will be restored from the surface gradients, which is calculated by the relations between the tested gradients and phase difference of horizontal and vertical fringes. The measurement resolution of this method has also been discussed. Notablely, the computer-generated fringe will bring a no-error phase shift and make the shift of periods and directions more easily. A marked point is used to guide the phase unwrapping procedure. The experimental results of a tile surface are presented and prove its validity.
    [in Chinese], [in Chinese], [in Chinese]. Three-Dimensional Shape Measurement for Specular Surface Based on Fringe Reflection[J]. Acta Optica Sinica, 2006, 26(11): 1636
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