用于CCD数码成像的自动对焦技术  

Auto-focusing technique used in CCD digital imaging

作　　者：张建民[1] 程红涛[2] 

机构地区：[1]天津工程师范学院电子工程系,天津300222 [2]天津工程师范学院机械工程系,天津300222

出　　处：《天津工程师范学院学报》2007年第2期11-15,共5页Journal of Tianji University of Technology and Education

基　　金：教育部科学技术研究重点项目(02012)

摘　　要：为了提高自动对焦的实时性与精确性,提出了两项措施,即:利用视网膜具有空间变化分辨力的特性来确定图像处理区域;根据清晰度评价函数具有单峰曲线的特点,采用单向搜索的爬山算法来确定最佳对焦位置。该措施在快速处理图像的基础上能较为精确地找到焦点位置。To enhance the velocity and definition of auto-focusing, some effective methods are put forward based on the principle that retina owns the space variation of resolution to draw the image area. In addition, based on the characteristic of singlet curve of sharpness function, the best focus position is found by the unidirectional hill-climbing research. It may not only process image rapidly but also find the correct focus position.

关 键 词：自动对焦 空间变化分辨力 清晰度函数 爬山算法 

分 类 号：TB852.1[一般工业技术—摄影技术]