3 October 1996 Topographic inspection of the soft and smooth surface: topographic inspection of the cornea
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Abstract
In this paper, we introduce a new method to inspect the soft and smooth surface, especially the corneal topography. The method is based on the fact that smooth surfaces have the property of reflecting light. Special-shaped gratings are used as projecting device, that is, different grating for different inspected object, according to the topographic condition. For example, a grating with the form of a series of concentric circular rings is good for corneal topography inspection. When the image which contains the topographic information of the object being tested is reflected, it is recorded by a CCD camera. Then the 2D image obtained is processed and calculated by a computer to make out a 3D profile of the surface. This article emphatically reckons a new algorithm which can deduce the corneal topography.
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Liqing He, Liqing He, Songlin Zhuang, Songlin Zhuang, Xiangning Li, Xiangning Li, Mengchao Li, Mengchao Li, Zijian Zhou, Zijian Zhou, } "Topographic inspection of the soft and smooth surface: topographic inspection of the cornea", Proc. SPIE 2899, Automated Optical Inspection for Industry, (3 October 1996); doi: 10.1117/12.253098; https://doi.org/10.1117/12.253098
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