Research on auto-focusing system based on signal processing of single-chip microprocessor

被引：0

作者：

Xu, XD ^{[1
]}

Zeng, C ^{[1
]}

Li, F ^{[1
]}

Huang, GZ ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

来源：

OPTICAL MANUFACTURING TECHNOLOGIES | 2002年 / 4921卷

关键词：

CMOS; auto-focusing; filter; single-chip microprocessor; signal processing;

D O I：

10.1117/12.481737

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, an auto-focusing system based on Signal Processing of Single-chip Microprocessor is introduced to realize auto-focusing. The system can automatically get the distance information of the worktable and drive the step motor to reach the aim of auto-focusing. The auto-focusing system is loaded on the original CMOS-based measuring system. After the AV signals from CMOS image sensor pass through the analog filter, the single-chip microprocessor samples and processes them, then controls the lens to be in focus. As a result, this method can not only achieve all functions of focusing, but also avoid complicated calculations. The system is low power consuming, programming rapidly. Here we analyse the key technique of the system and the results of the experiments are given. It can be practical applied and the further perfection of algorithm and software will result in the system having more functions.

引用

页码：97 / 103

页数：7