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http://dx.doi.org/10.5302/J.ICROS.2007.13.12.1160

Implementation of an Embedded Image Stabilization Control System for a Small Digital Camera  

Moon, Jung-Ho (강릉대학교 전자공학과)
Jung, Soo-Yul (삼성전자 디지털 미디어 사업부)
Publication Information
Journal of Institute of Control, Robotics and Systems / v.13, no.12, 2007 , pp. 1160-1166 More about this Journal
Abstract
This paper presents the design and implementation of an embedded image stabilization control system for a mobile phone with a built-in camera. Image stabilization is a family of techniques for reducing image blur resulting from minute camera shake due to hand-held shooting, thereby allowing the use of shutter speeds slower than values normally required to obtain sharp images. A mechanical image stabilizer mechanism developed for a camera mobile phone is introduced and a digital control system as a part of the image stabilization system is designed and implemented on an 8-bit microcontroller with integer arithmetic in C. This paper focuses primarily on issues that need to be taken into consideration for fixed-point implementation of the digital controller. Several experimental results are presented to demonstrate the performance of the implemented image stabilization control system.
Keywords
image stabilization; digital camera; fixed-point implementation; embedded controller;
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