基于分辨力空间变化的自动聚焦方法  

The Application of Space Variable Resolution to Automatic Focusing

作　　者：黄剑琪[1] 徐之海[1] 冯华君[1] 戴顺林[1] 李奇[1] 边美娟[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,浙江杭州310027

出　　处：《光电工程》2001年第1期22-26,共5页Opto-Electronic Engineering

基　　金：国家教委高等学校骨干教师资助计划资助项目

摘　　要：在获取数字化图象的过程中 ,快速、有效地实现自动聚焦十分重要。提出一种加快对焦判断的方法 ,模仿人眼视觉系统中视网膜的空间变化的分辨力 ,建立了模拟模型并进行了数据分析。实验表明 ,利用所提出的模型 ,在保持高分辨力的同时又有一个大视场和较少的数据处理量 ,在保证了对焦精度的同时又提高了原有的处理速度 ,在对焦策略上有一定的先进性 。It is very important to realize automatic focusing quickly and effectively in the course of capturing digital images. A method for judgement of focusing is put forward in the paper. A simulation model is established by simulating the space variation of resolution in retina of human vision system and the data analysis is carried out. The experiment shows that a large field of view and less data processing can be maintained when the high resolution is kept by using of the proposed model. The original processing speed is improved on the basis of keeping the focusing accuracy. The model has certain advantage in focusing method. It has a good application prospect in robot vision system and digital imaging system.

关 键 词：自动聚焦 视觉系统 空间变化分辨力 机器人 

分 类 号：TP242.6[自动化与计算机技术—检测技术与自动化装置]