## Matlab铁路监控图像的复原技术研究

Study on the Recovery Technology of Railway Monitoring Image
Abstract: Digital images in the collection, transmission and storage process may be affected by various factors which led to decline in image quality, a phenomenon known as Image "degraded." We can use an image from the degraded image restoration technique to get a clear image. In the current technology for digital image recovery and synthesis of the literature on the basis of understanding, this paper introduces the Matlab-based image restoration technology research background, current status and direction of development, elaborated in using Matlab Processing Toolbox to achieve image restoration approach. 源自L六^维:论`文~网-.加7位QQ3249`114 www.lwfree.cn
This paper implements four image restoration algorithm, namely Wiener Filter algorithm; Constrained least squares(Regular) restoration algorithm; Iterative non-linear restoration algorithm(Lucy-Richardson algorithm) and blind deconvolution algorithms. For their principles and the corresponding Matlab function were introduced, and then the images of different simulation scenarios and analyze the experimental results. According to the simulation results, we can clearly be seen in the case of the known degenerate function, of these four algorithms, wiener filtering algorithm, which used to recover the image is relatively clear, blind deconvolution algorithm to recover the image quality is poor; in the degenerate case of unknown function, a restoration blind deconvolution algorithms is the best image quality.
Key words: Matlab; Wiener Filter; Constrained least squares recovery; Iterative non-linear recovery; Blind deconvolution

1绪论    1
1.1 研究背景与研究意义    1
1.2 国内外研究现状与水平    2
1.3 发展趋势    2
1.4 本文的主要工作及内容安排    4
2图像的退化    5
2.1 图像退化模型    5
2.2 图像噪声    6
2.2.1 图像噪声的概念    6
2.2.2 图像噪声的分类    6
2.3用函数复原图像    7
3几种经典的复原方法介绍    8
3.1 图像复原的本质    8
3.2 维纳滤波复原法    8
3.3 约束最小二乘方（正则）复原算法    9
3.4 迭代非线性复原法（Lucy-Richardson法）    10
3.5 盲去卷积法    12
4实验结果与分析    13
4.1 图像质量评价标准    15

4.2 利用维纳滤波进行复原    16
4.3 利用约束最小二乘方复原法进行复原    17 Matlab铁路监控图像的复原技术研究:http://www.lwfree.cn/tongxin/20170518/7310.html
------分隔线----------------------------