基于FPGA的视频图像采集与显示系统设计
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摘要
针对CCD摄像头输出的模拟CVBS信号数据量大和现场可编程门阵列FPGA并行处理能力强的特点,提出了一种CCD摄像头+FPGA+SDRAM+视频编解码芯片的采集与VGA显示系统设计方案。按照视频信号的处理过程,在FP-GA中设计了I2 C控制器,ITU656解码器、视频处理器、SDRAM控制器、色度空间转换模块和VGA显示模块,实现了对视频解码芯片的工作配置,视频数据的解析、处理、存储和显示。硬件验证结果符合设计要求。
As CCD camera analog signal data is enormous and FPGA's parallel processing capability is powerful,A project is proposed to acquire and display real-time analog video image data,which contains CCD camera,FPGA,synchronous dynamic random access memory(SDRAM),video decoding and encoding chip.According to the steps of video signal processing,five modules are implemented,including the decode of ITU656,video signal processor,SDRAM controller,color space conversion and VGA display controller module.These modules accomplish video decoder chip's configuration,parsing,processing,storage and display.The verification show good realization on hardware board.
As CCD camera analog signal data is enormous and FPGA's parallel processing capability is powerful,A project is proposed to acquire and display real-time analog video image data,which contains CCD camera,FPGA,synchronous dynamic random access memory(SDRAM),video decoding and encoding chip.According to the steps of video signal processing,five modules are implemented,including the decode of ITU656,video signal processor,SDRAM controller,color space conversion and VGA display controller module.These modules accomplish video decoder chip's configuration,parsing,processing,storage and display.The verification show good realization on hardware board.
引文
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[3]SHAO Zhongjun,CHENG Guangwei.Design of video captureand display based on FPGA[J].Electronic Component&DeviceApplications,2010,12(12):24-25(in Chinese).[邵忠俊,程光伟.基于FPGA的视频采集与显示模块设计[J].电子元器件应用,2010,12(12):24-25.]
[4]LUO Xiaoqiao,FAN Weiliang,LI Wei.Design and implemen-tation of digital video conversion interface based on FPGA[J].Electronic Measurement Technology,2008,31(10):177-178(in Chinese).[罗小巧,樊伟良,李伟.基于FPGA的数字视频转换接口的设计与实现[J].电子测量技术,2008,31(10):177-178.]
[5]WANG Jianzhuang.Study on the algorithms of high-speedimage processing based on FPGA and system implementation[D].Wuhan:Huazhong University of Science&Technology,2011(in Chinese).[王建庄.基于FPGA的高速图像处理算法研究及系统实现[D].武汉:华中科技大学,2011.]
[6]LIU Wenying.Design and implementation of video image pre-processing system based on FPGA[D].Tianjin:Tianjin Nor-mal University,2010(in Chinese).[刘文英.基于FPGA的视频图像预处理系统的设计与实现[D].天津:天津师范大学,2010.]
[7]JIANG Guoqiang.SOPC technology and application[M].Beijing:China Machine Press,2006(in Chinese).[江国强.SOPC技术与应用[M].北京:机械工业出版社,2006.]
[8]WANG Gang,ZHANG Lian.Design and typical examples ofSOPC embedded system based on FPGA[M].Beijing:PublishingHouse of Electronics Industry,2009(in Chinese).[王刚,张潋.基于FPGA的SOPC嵌入式系统设计与典型实例[M].北京:电子工业出版社,2009.]
[9]HAN Xiaojun.Digital image processing technology and applica-tion[M].Beijing:Publishing House of Electronics Industry,2009(in Chinese).[韩晓军.数字图像处理技术与应用[M].北京:电子工业出版社,2009.]
[10]ZHANG Zhigang.FPGA and SOPC design tutorial-DE2prac-tice[M].Xi’an:Xi’an University of Electronic Science andTechnology Press,2007(in Chinese).[张志刚.FPGA与SOPC设计教程-DE2实践[M].西安:西安电子科技大学出版社,2007.]
[11]FAN Ji,WU Xiaoyi,WANG Binyi,et al.FPGA realizationof SDRAM controller design in digital system[J].Journal ofGun Launch&Control,2009(4):38-40(in Chinese).[范继,吴小役,王斌翊,等.数字系统中SDRAM控制器的FPGA实现[J].火炮发射与控制学报,2009(4):38-40.]
[12]MA Ling,YANG Junfeng,SONG Kezhu,et al.A design ofmultiple DDR SDRAM controllers based on FPGA in a seismicdata acquisition system[J].Journal of University of Scienceand Technology of China,2010(9):939-945(in Chinese).[马灵,杨俊峰,宋克柱,等.地震数据采集中基于FPGA的多DDR SDRAM控制器设计[J].中国科学技术大学学报,2010(9):939-945.]
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