Research on auto-focusing technology for micro vision system

被引：23

作者：

Sha, Xiaopeng ^{[1
]}

Li, Wenchao ^{[1
]}

Lv, Xiaoyong ^{[1
]}

Lv, Jiangtao ^{[1
]}

Li, Zhiquan ^{[2
]}

机构：

[1] Northeastern Univ Qinhuangdao, Sch Control Engn, Qinhuangdao 066004, Peoples R China

[2] Yanshan Univ, Inst Elect Engn, Qinhuangdao 066004, Peoples R China

来源：

OPTIK | 2017年 / 142卷

关键词：

Auto-focusing; DCT; SUSAN algorithm; Climbing algorithm; DISCRETE COSINE TRANSFORM; ALGORITHM;

D O I：

10.1016/j.ijleo.2017.06.001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The paper presents a passive auto-focusing technology by combining the discrete cosine transform(DCT) algorithm and small univalve segment assimilating nucleus(SUSAN) algorithm with evaluation function. The new method has the advantage of unimodal, local extremum and sensitivity of the focus curve. For the focusing search algorithm, the improved mountain climbing method which combined the large step and small step has been proposed, it makes the micro-vision system could find the focal plane more quickly and accurately. (C) 2017 Elsevier GmbH. All rights reserved.

引用

页码：226 / 233

页数：8

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