基于CCD与FPGA的全自动电脑验光仪图像系统设计

Application of CCD and FPGA image system in auto refractometer

本文介绍了全自动电脑光仪的测量原理,其中光学图像处理系统是产品设计的核心。为了提高测量精度,着重论述了一种基于CCD和FPGA共同完成的一套光学图像处理系统。该系统主要由图像采集和图像处理系统组成,CCD把采集到的人眼底图像送至FPGA,FPGA通过其内部强大的对数字图像的处理能力,对眼底图像进行分析、计算、处理、最终得出理想的测量结果。经验证,该系统能准确测量人眼屈光度,技术指标达到国家相关检验标准。

This paper intorduced the diopter measurement principle of auto refractometer.In which,optical image processing system is the core of products plan.To raise measure precision ,Have discussed a kind of a set of optical image processing system based on CCD and FPGA common completion emphatically.This system is formed mainly by image collection and image processing system,CCD sends the person image of eye ground that gathered ,is with FPGA ,FPGA pass through the powerful handling for digital image of its inside ability,Cross-eye base image is analysed ,is calculated ,is handled ,eventually,reach ideal measure result.The system is reliable and applied.