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Proceedings Paper

Topographic inspection of the soft and smooth surface: topographic inspection of the cornea
Author(s): Liqing He; Songlin Zhuang; Xiangning Li; Mengchao Li; Zijian Zhou
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Paper 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.

Paper Details

Date Published: 3 October 1996
PDF: 5 pages
Proc. SPIE 2899, Automated Optical Inspection for Industry, (3 October 1996); doi: 10.1117/12.253098
Show Author Affiliations
Liqing He, East China Univ. of Technology (China)
Songlin Zhuang, East China Univ. of Technology (China)
Xiangning Li, East China Univ. of Technology (China)
Mengchao Li, East China Univ. of Technology (China)
Zijian Zhou, East China Univ. of Technology (China)

Published in SPIE Proceedings Vol. 2899:
Automated Optical Inspection for Industry
Frederick Y. Wu; Shenghua Ye, Editor(s)

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