An implementation of closed-loop optical image stabilization system for mobile camera

Author

Seung-Kwon Lee ; Jin-Hyeung Kong

fYear

2014

fDate

10-13 Jan. 2014

Firstpage

45

Lastpage

46

Abstract

In this study, a new Closed-loop Optical Image Stabilization(OIS) system is developed for mobile camera. Gyro sensors, which are made by MEMS process, normally generate an accumulated error(drift) and escape the zero angle because of noise factor while it calculates the rotating angle. This research explores the new algorithm, utilizing DCF(Drift Compensation Filter) and BACF(Boot Angle Compensation Filter). RRF (Ringing Reduction Filter) PID controller is applied Feedforward control to reduce the actuator´s vibration by disturbance. OIS Actuator control performance than previous research has improved.

Keywords

actuators; cameras; closed loop systems; feedforward; filtering theory; image processing; micromechanical devices; three-term control; BACF; DCF; MEMS process; OIS actuator control; OIS system; PID controller; RRF; actuator vibration; boot angle compensation filter; closed-loop optical image stabilization; drift compensation filter; feedforward control; gyro sensors; mobile camera; noise factor; ringing reduction filter; Adaptive optics; Mobile communication; Optical filters; Optical imaging; Optical sensors; Vibrations;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ICCE), 2014 IEEE International Conference on

Conference_Location

Las Vegas, NV

ISSN

2158-3994

Print_ISBN

978-1-4799-1290-2

Type

conf

DOI

10.1109/ICCE.2014.6775901

Filename

6775901