人眼角膜曲率参数亚像素测量系统的设计

赵俊奇; 段培华; 郭智勇; 刘海峰

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人眼角膜曲率参数亚像素测量系统的设计

更新时间：2026-09-14

- 人眼角膜曲率参数亚像素测量系统的设计
- 人眼角膜曲率参数亚像素测量系统的设计
- Issue 3, (2011)
- 作者机构：
  
  1. 中北大学光电厂
  2. 中北大学信息与通信工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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赵俊奇, 段培华, 郭智勇, et al. 人眼角膜曲率参数亚像素测量系统的设计[J]. 2011, (3).
DOI：

赵俊奇, 段培华, 郭智勇, et al. 人眼角膜曲率参数亚像素测量系统的设计[J]. 2011, (3). DOI：

摘要

为了提高人眼角膜曲率参数的测量精度

设计了一套角膜测量系统.利用红外光将标准的靶环投影到人眼角膜上

反射后形成带有眼角膜参数特性的虚物

该物再经光学系统成像在CCD图像传感器上.然后通过高速DSP TMS320F2812进行图像二值化处理

最后采用插值方法计算角膜曲率参数.实验用标准角膜模拟眼进行了测试

结果同日本TPCON KR-8100角膜/验光仪比对

结果表明:计算结果达到亚像素精度

二者测量误差小于国家计量规定的检查最小误差±0.02 mm.

Abstract

Measurement system of cornea were designed to improve diopter parameter measurement precision of eye cornea.Standard ring was projected onto an eye cornea with infrared

after reflecting from eye cornea

the virtual object with eye cornea parameter was formed and imaged in the CCD image sensor through optical system processing.Binary image was divided up by DSP TMS320F2812

and diopter parameter of eye cornea was calculated with interpolation algorithm.The experiment was carried through by using the eye analogue with standard cornea

and comparison to refractor with model number TPCON KR-8100 made in Japan

results show both measurement error is less than ±0.02 mm which is minimum error of diopter prescribed by national metrology bureau

and measurement precision attain subpixel.

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