实用的电子稳像系统设计

Practical Design of Electronic Video Stabilization System

由于在车载及机载系统中,受限于质量、体积及功耗等因素,基于PC的电子稳像系统无法直接使用,而基于DSP的系统具有体积小、重量轻、功耗低的特点;这里从硬件与软件两方面设计了一种基于DM642的视频电子稳像系统;给出了系统的输入输出以及数据处理的整体硬件设计,阐述了基于块匹配的稳像算法,并根据设计的硬件与算法搭建Simulink模型,利用Matlab/Simulink软件的实时工具箱RTW创建CCS工程并直接生成C语言代码的方法,调试开发系统的周期;实验结果表明,稳像后的PSNR值明显增大,该系统有效地稳定了频系列;本系统设计简单,稳像精度较好,具有一定的应用价值。

Because in the car and on-board systems,which is limited by the quality,size and power consumption and other factors,PC-based electronic image stabilization system can not be used directly,while the DSP-based system that is compact,light weight,low power consumption.Here two aspects of hardware and software is designed based on DM642 video electronic image stabilization system.The input-output system and data-processing part of the hardware design are given,and expatiating block matching algorithms.According to the hardware and algorithms,the Simulink model of system is build.Using RTW（Real-Time Workshop） toolbox of Matlab software is given to create CCS project and generate C code directly,so as to shorten the debugging cycle of the system development.The experimental result indicated that the steady elephant＇s PSNR value increases obviously,this system is effective in image stabilization.This system design is simple,the steady elephant precision is good,has certain application value.