摘要： 基于EMCCD（电子倍增电耦合器件）的视频图像处理算法——直方图均衡化是将基于概率论基础上的视频图像灰度直方图统计和变换处理应用基于 FPGA 的硬件平台得以实现。 直方图均衡化是一种应用广泛空间的图像增强技术。通常用来增加图像的全局对比度。通过这种方法，亮度可以更好地在直方图上分布。这样就可以用于增强局部的对比度而不影响整体的对比度。 文章主要介绍了基于 EMCCD 结构及工作原理的视频灰度图像直方图均衡化算法设计和软硬件实现。并针对传统视频图像均衡化算法进行了运算过程的去浮点化改进，以提升系统软硬匹配度，同时详细阐述了二级树状乒乓操作系统架构和工作原理以及其在视频图像处理传输过程中的作用和意义。 测试结果表明该系统工作稳定成像清晰，曝光时间和增益控制效果明显，成功实现对视频图像的灰度直方图均衡化处理，达到了设计要求。 59996
毕业论文关键词： EMCCD 直方图均衡化 灰度统计 图像增强 FPGA VHDL 图像传感器
Title: The EMCCD video image processing algorithm —— histogram equalization Abstract： The EMCCD (electron multiplying charge coupled device) video image processing algorithm ——histogram equalization is based on the probability theory of gray histogram statistics and transform applications. The video image processing system finally realized on the hardware platform of FPGA. Histogram equalization is a widely used space image enhancement technique. Usually used to increase the image's global contrast. By this method, the brightness could be better distributed on the histogram. This can be used to enhance the local contrast without affecting the overall contrast. This paper mainly introduces the algorithm design and software & hardware realization of EMCCD video image gray histogram equalization and improved the traditional video image equalization algorithms by removing the floating point in operation process. Analyzed the two layer collaborative system structure and working principle of operation as well as the function and significance in the process and transmission of video image processing. The test results show that the system is stable and imaging clear，the exposure time and gain control effect obvious and the histogram equalization processing of video images successfully implement, meet the design requirements.
Keywords: EMCCD Histogram-equalization Gray-statistics Image-enhancement FPGA VHDL Image-sensor
目录
1绪论3
1.1本课题研究的背景和意义3
1.2EMCCD视频图像直方图均衡化原理概述.3
1.3视频图像处理技术发展现状.4
1.4论文主要研究内容5
2EMCCD成像系统构架..7
2.1EMCCD结构.7
2.2EMCCD工作过程8
2.2.1光电转换与存储..8
2.2.2电荷的转移9
2.2.3电荷的检测9
2.3FPGA视频图像处理平台简介10
2.4EMCCD系统整体架构.11
3直方图均衡化算法设计.12
3.1设计思路.12
3.1.1基本算法.12
3.1.2算法改进方案12
3.2算法matlab仿真检验..13
3.2.1matlab仿真效果图..13
3.2.2仿真结果分析15
3.3EMCCD视频图像均衡化算法硬件实现..16
3.3.1EMCCD视频图像灰度直方图统计模块..16
3.3.2EMCCD视频图像灰度直方图均衡化模块16
3.3.3EMCCD视频图像灰度直方图均衡化映射模块..17
3.3.4直方图均衡化模块集成及整体构架方式..18
3.4系统时序支持模块..19
3.4.1帧转移模块..19
3.4.2行转移模块..19
3.4.3串行读出模块19 EMCCD视频图像处理算法设计直方图均衡:http://www.youerw.com/tongxin/lunwen_65338.html