电子稳像技术在船载电视监视系统中的应用

本文简述了电子稳像技术的基本原理,重点介绍了国内自主研发的船载电视监视系统电子稳像器的实现和主要性能特点,以及为满足性能要求而采用的运动检测和补偿技术.该电子稳像器采用灰度投影算法检测序列图像当前帧和参考帧之间的运动矢量,并且通过算法改进实现亚像元检测.在补偿图像运动时,通过采用平滑算法,避免了在图像补偿时出现的马赛克现象,保证了图像补偿精度.实验结果表明,本文提出的电子稳像器具有稳像精度高,实时处理能力强和较好的实际应用效果.

Application of EIS to Ship-borne TV Reconnaissance System

This paper describes briefly the basic principles of Electronic Image Stabilization (EIS) technique,and emphasizes the implementation and performance characteristics of the electronic image stabilizer on the ship-borne TV reconnaissance system and the detecting and compensating technologies adopted on them to meet the performance requirements.The proposed electronic image stabilizer detects motion vector between reference frame and current frame in sequential image using the Gray Projection Algorithm (GPA).In order to achieve accurate detecting results,an improved gray projection algorithm is exploited to detect sub-pixel image motion vector.Furthermore,the proposed electronic image stabilizer uses the smooth algorithm in transform formula of the motion compensation,which avoids mosaics of image occurred and improves the precision of image compensation.The experimental results indicate that the electronic image stabilizer is effective to actual application and has high image stabilizing precision and excellent real time processing capacity.