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1、UniversityofHuddersfieldRepositoryYang,Tao,Zuo,YongandChen,XiaomeiAuto-focustechnologyanditsapplicationbasedonimageprocessingOriginalCitationYang,Tao,Zuo,YongandChen,Xiaomei(2009)Auto-focustechnologyanditsapplicationbasedonimageprocessing.ComputerSimulation,26(7).pp.256-259.
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5、9年7月文章编号:1006-9348(2009)07-0256-04基于图像处理的自动聚焦技术及应用122杨涛,左勇,陈晓梅(1.中国人民解放军63898部队,河南济源454650;2.国防科工委第一计量测试中心北京长城计量测试技术研究所,北京100095)摘要:自动聚焦技术是提高压痕直径测量系统测量精度、智能化和自动化的重要手段。介绍了采用图像处理法实现压痕直径测量系统的自动聚焦技术,核心就是选择一个合适的图像清晰度评价函数。在研究了众多图像清晰度评价函数的基础上,提出了基于向量模型和改进DCT变换的图像清晰度评价函数,实验表明,提出的算法具
6、有良好的单峰性、准确性、稳定性、可靠性和快速性。最后通过基于COM组件技术的Matlab与VB混合编程来保证算法实现和软件设计。关键词:自动聚焦;压痕直径测量;清晰度评价函数;混合编程中图分类号:TP317.4文献标识码:BAuto-focusTechnologyandItsApplicationBasedonImageProcessing122YANGTao,ZUOYong,CHENXiao-mei(1.Unit63898ofPLA,JiyuanHenan454650,China;2.ChangchengInstituteofMetrolog
7、y&Measurement,Beijing100095,China)ABSTRACT:Auto-focusingtechniqueisanimportantmethodtoimprovetheprecision,intelligentization,automat-izationfortheindentationdiametermeasurement.Thepaperintroducesanauto-focusmethodofindentationdiametercmeasurementbasedonimageprocessing.Hardco
8、reoftheauto-focusingtechniqueistheevaluationfunctionsselec-tion.Basedonthea
