基于FPGA的视频图像采集与显示系统设计

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FPGA中设计了I2C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.