基于FPGA的数字图像处理与SOPC系统的实现

【作者】 王伟峰；

【导师】 李玉惠；

【作者基本信息】 昆明理工大学 ， 控制理论与控制工程， 2008， 硕士

【摘要】 数字图像处理在国防、安防、监控等关系国家和社会安全的领域应用越来越广泛,早期的数字图像处理主要通过PC机或FPGA+DSP来完成,由于PC机的体积、功耗过大,而用FPGA+DSP处理又相对成本较高、系统实现也较复杂,限制了其在道路监控、小区安防方面的广泛应用。基于FPGA的嵌入式SOPC系统能更好的解决这方面问题,推动了数字图像处理硬件实现的发展。数字图像的旋转、放大、追踪因其在国防、安防、监控中的重要性,受到研发人员的重视,但用纯硬件语言去实现又有很大的复杂性,有些算法写成硬件语言非常困难。在嵌入式SOPC系统中,可以用软件语言实现算法、硬件实现架构,有效的解决了这个问题。论文的研究内容是在已有的FPGA开发平台上,设计出视频解码模块,把模拟视频解码成数字视频流,并对此数字视频流进行图像处理,从而实现对视频图像的旋转、放大功能,最后通过VGA接口输出所要求的视频图像。论文讨论了双线性插值算法、最近邻点法,算法的软硬件编程实现;用硬件描述语言进行了系统逻辑架构设计;整个硬件系统和各逻辑模块都用Modelsim进行了仿真验证;完成了整个系统下板调试,并用ChipScope Pro进行了实时信号追踪验证。更多还原

【Abstract】 Digital image processing is more and more widely used in many fields,such as military,safeguard,monitoring and so on.Early,digital image processing is accomplished by PC or FPGA&DSP.The volume,power dissipation of PC is too big.The cost of FPGA &DSP is high and its system realization is also complicated. Because of these disadvantageous,PC and FPGA&DSP’s extensive use in road monitoring and housing estate safety are restricted.The embedded SOPC system based on FPGA resolved these problems,and promote the digital image processing’s development.The digital image’s revolution,enlarges and tracks is significance in military,safeguard,monitoring.But it is complex to realize them by pure hardware language.And some algorithms translate into hardware language is extraordinary difficulty.In the embedded SOPC system,we can effectively use the advanced language,such as C++,to realize algorithm and the hardware realization frame to resolved the above problem.This thesis is based on the existing FPGA development platform.The main goal for the thesis was to build a video decoder module to decode the analog video into digital video stream,and processing this digital video stream to implement rotation and scale-up of the video image.Finally,output the required digital video images through VGA interface.Issues discussed in this report are bilinear interpolation algorithm and nearest adjacent points method,and the implement in software and hardware;constructing the structure of the whole system with hardware description language;the entire system and logic modules are simulation and verification by the Modelsim;the whole system has been downloading to the board,and using ChipScope Pro to debug and real-time track verification.更多还原