%0 Journal Article
%T Fast and high sensitivity focusing evaluation function<br>一种快速高灵敏度聚焦评价函数*
%A LI Yu-feng
%A CHEN Nian-nian
%A ZHANG Jia-cheng
%A <br>李郁峰
%A 陈念年
%A 张佳成
%J 计算机应用研究
%D 2010
%I 
%X According to requirements of focusing accuracy and speed,by the analysis and comparison of the common auto-focusing evaluation function,this paper proposed a new evaluation function based on gray scale difference:using product of adjacent pixels difference in the horizontal and vertical direction as core function.The algorithm maintained a good computing performance,and its curve was more steep so that could speed focusing convergence rate and improve focusing accuracy.By using threshold value to filter noi...
%K auto-focusing
%K evaluation function
%K gray scale difference<br>自动聚焦
%K 评价函数
%K 灰度差分
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=B105186A8075B82C9576FC4F3E1D72A8&yid=140ECF96957D60B2&vid=DB817633AA4F79B9&iid=E158A972A605785F&sid=39F2A646778CAD6A&eid=69E0A22DA7775B50&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=7