基于NiosⅡ多核高速图像采集系统设计  

Design of Multi-core High-Speed Image Acquisition System Base on NiosⅡ

作　　者：李光明[1] 何振琦[1] 张慧琳[2] 

机构地区：[1]陕西科技大学电气与信息工程学院,西安710021 [2]西北工业大学自动化学院,西安710072

出　　处：《化工自动化及仪表》2010年第8期83-86,共4页Control and Instruments in Chemical Industry

基　　金：陕西省科技厅工业攻关项目(2006K05-G17);西安市科学技术局资助项目(YF07031)

摘　　要：为了进一步提高图像采集速度和质量,提出了一种基于NiosⅡ多核的高速图像采集方法。介绍了一种基于FPGA的高速图像采集系统,在该系统中,使用Altera公司的CycloneⅡ型FPGA,并配置了NiosⅡ双软核cpu的构架方式,采用结合乒乓操作原理和面积换速度原则的方法设计图像采集系统,提高了图像采集的速度,然后融合JPEG2000图像压缩的算法保存并传输给上位机,从而提高了图像采集质量。最终完成一种高速图像采集系统,仿真结果表明,与传统的图像采集方法相比,该方法具有更高的图像采集速度和图像采集质量。In order to improve the speed and quality of image acquisition,a method of high-speed image acquisition based on NiosⅡ was proposed.A high-speed image acquisition system based on FPGA was introduced.In this system,Altera＇s CycloneⅡof FPGA was used and Nios Ⅱ dual-mode soft-core framework CPU was configured.The velocity of image acquisition was improved by the theory of ping-pang operation and the principle of transition rate.Data was kept and transmitted to the host computer by image compression algorithm of JPEG2000 to improve the quality of image acquisition,and a high-speed image acquisition system was realized.The simulation experiments demonstrate that this method provides a higher speed and quality of image acquisition than traditional methods.

关 键 词：图像采集 NiosⅡ FPGA 乒乓操作原理 图像压缩 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]