一种基于图像处理的快速自动聚焦算法  

An Improved Auto Focus Algorithm Based on Image Processing

作　　者：郭建[1] 赵显[1] 

机构地区：[1]湘潭大学材料与光电物理学院,湖南湘潭411105

出　　处：《湘潭大学自然科学学报》2012年第2期22-25,共4页Natural Science Journal of Xiangtan University

摘　　要：提出了一种基于图像处理的快速自动聚焦算法.该方法采用拉普拉斯梯度函数作为聚焦评价函数,然后利用改进的极点搜索算法寻找对焦平面.采用该搜索算法能在全局内进行极点搜索,快速找到成像质量最高的图像,有效地避免局部极值的干扰,快速有效地实现自动聚焦.In this paper, the author proposes a fast auto focus algorithm based on image processing. The definition of an image could be obtained by.calculating the Laplacian gradient function. Then the author proposes an improved pole searching algorithm to find the focus. The most distinct image could be found quickly by this algorithm. What＇s more, it could effectively avoid the interfere of local extremums. The auto focus could be fast and efficiently realized by the algorithm

关 键 词：自动聚焦 拉普拉斯梯度函数 极点搜索 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]