刀具预调仪的调焦区域探究  

Exploration Cutting tool Presetters Focusing Region

作　　者：刘娟[1] 杜文华[1] 段能全[1] 曾志强[1] 

机构地区：[1]中北大学机械与动力工程学院,山西太原030051

出　　处：《科技视界》2015年第1期78-79,共2页Science & Technology Vision

基　　金：山西省研究生优秀创新项目"基于机器视觉的难测尺寸高精度测量技术研究"(20133095)

摘　　要：本文通过CCD图像采集技术提出了一种以灰度值的差的平方和作为图像是否聚焦的评价函数的自动调焦方法,通过研究比较常用调焦评价函数和对焦窗口,提出了一种适用于刀具预调仪的自动聚焦技术,选择改进的对焦评价函数以及改进的调焦窗口,保证刀具预调仪自动聚焦技术的精度和时间。通过实验验证,不同的调焦区域对调焦特性曲线影响不同,根据调焦特性曲线分析聚焦区域选择的基本原则,使用灰度差分法以及倒L型调焦窗口能够得出良好的调焦评价曲线图。This paper presents a sum of squares with poor image gray value as a function of whether the focus of the evaluation method through the auto-focus CCD image capture technology, through the study of comparison of common focusing evaluation function and focusing window, a method is presented for the tool presetter automatic focusing technique, select the focusing window and focus improved evaluation function anti improvement, ensure the tool presetter automatic focusing accuracy and time. Through experiment, effects of different regions of the focus of focusing curves of different, analysis of the basic principles of the focus area selection based on focusing characteristic curves, use the gray level difference methnd aud inverted L, type focusing window can get good focusing evaluation curve.

关 键 词：自动聚焦 调焦评价函数 调焦窗口 刀具预调仪 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]