基于FPGA的数字图像显示系统设计实现

发布时间：2018-05-06 20:03

本文选题：FPGA + 图像处理　；参考：《中南民族大学》2013年硕士论文

【摘要】：数字图像处理技术在人们日常生产生活、国家安全等方面有着广泛的应用。传统的数字图像显示系统多基于ARM或是DSP器件实现。这些方式对于图像数据量大，显示实时性要求高的应用上表现不好，功耗和体积大，运行不稳定，因此整体的性能不太理想。本设计采用的FPGA器件本身有着内嵌的微处理器和DSP块，大量的可配置硬逻辑。无论是浮点处理、带宽、并行性、实时性相比前者都有显著的优点。因此采用FPGA实现的图像处理系统将更具优点。论文采用的方法是使用sparten6主芯片结合SD卡存储芯片和LCD显示器件。详细实现该系统中的SD卡控制器模块，SPI协议模块，图像解码模块，乒乓操作FIFO模块，DDR控制器模块，FAT16的文件结构，VGA显示模块。完整的实现了基于SD卡存储的数字图像的处理显示系统。采用HDL编码和调用IP核的方式，实现了高清图像的实时动态显示。相比基于软件的实现方式在处理速度，兼容性和扩展性上更具有优势。基于FPGA的实现方式充分利用其内嵌的丰富的硬件资源和RAM查找表映射成硬逻辑的能力，及其良好的内部架构，可扩展配置的特点，在灵活度和使用效率上无出其右。本文设计了精巧的状态机和各个数据处理模块。将软件程序的顺序处理通过状态机映射成物理电路实现，大大提高了处理速度。另外通过改变编解码算法还可用于音视频处理。具有很好的扩展性。具有研究和使用价值。
[Abstract]:Digital image processing technology is widely used in people's daily life and national security. The traditional digital image display system is based on ARM or DSP devices. These methods do not perform well in applications with large amount of image data and high demand for real-time display, power consumption and volume are large, and the operation is unstable, so the overall performance is not very good. The FPGA device used in this design has embedded microprocessor and DSP block, and a lot of configurable hard logic. Both floating-point processing, bandwidth, parallelism and real-time have significant advantages over the former. Therefore, the image processing system implemented by FPGA will have more advantages. The method used in this paper is sparten6 main chip, SD card memory chip and LCD display device. The SD card controller module including SPI protocol module, image decoding module, ping-pong operation FIFO module and FAT16 file structure display module are implemented in detail. Complete realization of digital image processing and display system based on SD card storage. The real-time dynamic display of high-definition image is realized by using HDL coding and calling IP core. Compared with software-based implementation, it has more advantages in processing speed, compatibility and expansibility. The implementation method based on FPGA makes full use of the rich hardware resources embedded in it and the ability of mapping RAM lookup table to hard logic, and its good internal architecture, extensible configuration, and no right in flexibility and efficiency. In this paper, a sophisticated state machine and various data processing modules are designed. The sequential processing of the software program is realized by mapping the state machine to the physical circuit, which greatly improves the processing speed. In addition, by changing the encoding and decoding algorithm can also be used for audio and video processing. It has good expansibility. Has the research and the use value.
【学位授予单位】：中南民族大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.12;TN791

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