基于边缘特征的单帧图像清晰度判定  

Single frame image definition based on edge character

作　　者：杨斯涵[1] 

机构地区：[1]成都理工大学信息工程学院,成都610059

出　　处：《计算机工程与应用》2009年第30期198-199,203,共3页Computer Engineering and Applications

摘　　要：自动调焦是保证目标跟踪系统实时获得清晰图像的重要技术,而何时触发调焦又成为了其中的关键问题。在图像清晰时如果触发调焦,初始的电机盲动会导致图像可能变得更模糊。提出了一种可单帧判断图像是否清晰的方法,消除了图像在清晰情况下却触发调焦的误操作,从而提高了跟踪的可靠性和精度。通过对多组实际图像序列的测试,证明该方法合理可靠。Auto-focus is a key technology in aim-tracking system,which assures of obtaining focus-image in real time.And when springing focus becomes a key question of it.If touch off focus system when image in focus,will result in out of focus.This dissertation puts forward a way on judging an image whether in focus by a single frame,and avoiding an error operation when the image in focus to spring focus.Thereby improve the reliability and the precision of tracking.By testing a series of images,prove that the method is reasonable and credibility.

关 键 词：图像清晰度 自动调焦 单帧 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]