作者：梁海军, 赵建
作者单位：西安电子科技大学机电工程学院, 陕西西安 710071
关键词：图像采集; NIOSII处理器; CMOS图像传感器; 大容量SDRAM; FPGA器件
摘要：
介绍了一种基于NIOSII的高分辨率图像采集系统的设计。系统以NIOSII软核处理器为主控制器,配合高像素CMOS图像传感器、大容量SDRAM、高速DAC器件,实现高速高分辨率数字图像采集与实时显示。详细阐述了将Bayer图像转化为RGB图像的算法原理及其FPGA硬件实现,同时还给出了系统中其他各模块的FPGA硬件实现及其时序仿真图。系统提供了灵活的图像数据传输接口,可满足大多数工业应用。
Design of image acquisition system of high resolution based on NIOS II
LIANG Hai-jun, ZHAO Jian
School of Mechanic and Electronic Engineering, Xi'an University of Electronic Science and Technology, Xi'an 710071, China
Abstract: A design of a high resolution image acquisition system based on NIOS II is presented. The high speed and high resolution image acquisition and Real-time display were implemented in this system which used the NIOS II soft processor as the main processor and cooperated with the high resolution CMOS image sensor, the large capacity SDRAM and the high speed DAC device as well. The theory and FPGA hardware implementation of a method which converts Bayer image into RGB image were expounded. Furthermore, the FPGA hardware implementation and emulate graphics of other modules in this system were also mentioned. This system provides many flexible image transmission interfaces and can meet demands of various industry applications.
Keywords: Image acquisition; NIOS II; CMOS image sensor; Large capacity SDRAM; FPGA
2008, 34(5): 61-65 收稿日期: 2007-12-6;收到修改稿日期: 2008-2-23
基金项目:
作者简介: 梁海军(1982-),男,陕西西安市人,硕士研究生,专业方向为嵌入式图像。
参考文献
[1] 周博, 邱卫东, 陈燕, 等.SOC-基于NIOS的SOPC设计与实践[M].北京:清华大学出版社, 2004.
[2] 夏闻宇.Verilog系统设计教程[M].北京:北京航天航空大学, 2003.
[3] 任爱锋, 初秀琴, 孙肖子, 等.基于FPGA的嵌入式系统设计[M].西安:西安电子科技大学出版社, 2004.
[4] 罗均, 吴克松, 廖红华.基于NIOS II的图像采集和显示的实现[J].电子技术应用, 2007(2):24-27.
[5] 董兵, 朱齐丹, 文睿.基于FPGA的VGA图像控制器的设计与实现[J].应用科学, 2006, 33(10):42-45.
[6] 郭书军, 王玉花, 葛纫秋.嵌入式处理器原理及应用-NIOS系统设计和C语言编程[M]. 北京:清华大学出版社, 2004.
[7] 吴继华, 王诚.Altera FPGA/CPLD设计(高级篇)[M]. 北京:人民邮电出版社, 2005.
[8] 潘松, 黄继业, 曾毓.SOPC技术实用教程[M].北京:清华大学出版社, 2005.
[9] 马志波, 乔大勇, 苑伟政, 等.一种新型CCD图像采集系统设计[J].传感技术学报, 2006, 19(4):1251-1252.
[10] 肖炀, 卿粼波, 罗代升.基于FPGA的多显示模式VGA接口研究与设计[J]. 计算机工程与科学, 2007, 29(5):62-63.
[11] 陈明松, 初秀琴, 任爱锋.基于Nios II的IP Camera传输系统实现[J].国外电子元器件, 2008(2):53-56.
