FPGA低照度CMOS噪声抑制和电子变倍技术研究

摘要图像处理技术作为一门独立的学科发展半个多世纪以来，图像噪声的抑制，一直是重中之重；随着电子设备的迭代，对图像进行电子变倍以满足不同分辨率需求也日渐重要。本课题进行了基于FPGA的低照度CMOS噪声抑制和电子变倍技术的研究。73351

本文先介绍了低照度CMOS的意义及其与CCD器件的异同，接着介绍了低照度CMOS的发展方向，噪声抑制和电子变倍技术的意义和发展，本文的研究背景和内容。接着详细介绍了项目硬件平台，并进一步记述了平台各功能模块的调试检测工作和平台的搭建。运用已有的硬件平台，实现低照度CMOS相机图像输入，经FPGA开发板上TVP5150芯片处理将输入的模拟信号转换成数字信号，运用双线性插值放大实现两倍和四倍的电子变倍，分别运用中值、高斯、加权三种滤波器实现项目预计的噪声抑制功能，完成处理操作后，由ADV7343芯片将数字信号转化成模拟信号，由显示屏输出。记录了项目最终实现的的电子变倍和噪声抑制的成果。并将成果和运用MATLAB仿真的结果对比，评价该硬件实现方法的效果。

毕业论文关键词低照度CMOS FPGA 双线性插值电子变倍噪声抑制

毕业设计说明书外文摘要

Title The research on low illumination CMOS noise suppression and electronic scaling technology based on FPGA

Abstract Image processing technology as a independent discipline has developed for more than half a century ,and image noise suppression is always of enormous importance。 also,with the revolution of electronic equipment, how to achieve electronic magnification according to different physical resolution of various screens efficiently is increasingly becoming a popular subject。 This paper has carried on the research on low illumination CMOS noise suppression and electronic magnification technology based on FPGA。

This paper firstly make comparison between CCD and CMOS device,then introduce the significance and the development direction of low illumination CMOS,and the introduction of the significance and the development of the technology of noise suppression and electronic magnification, the background and content of the research。 Then introduces the hardware and software platform of the project ,the input and output of the image,then the argumentation and algorithm of the route to achievement electronic magnification,the achievement of noise suppression by using median Gaussian and weighted filters separately。 then the description of the modulation of each construction of the platform。Then compare the result of the project with MATLAB simulation results as evaluation

Keywords Low illumination CMOS FPGA electronic magnification Interpolation amplification Noise suppression

1 绪论 1

1。1 低照度CMOS的研究意义和发展 1

1。1。1 CMOS和CCD器件的对比 1

1。1。2 CMOS发展现状 2

1。1。3 低照度 CMOS未来发展趋势 4

1。2 噪声抑制与电子变倍的意义和发展现状 4

1。3 本课题的研究背景 5

1。4 本课题的工作内容 6

2 基于FPGA的平台介绍和实现 7

2。1 低照度CMOS 7

2。2 FPGA开发板 FPGA低照度CMOS噪声抑制和电子变倍技术研究:http://www.youerw.com/tongxin/lunwen_83676.html