3 October 1996 Topographic inspection of the soft and smooth surface: topographic inspection of the cornea
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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