Restoration of motion-blurred image based on Wiener filter and its application in aerial imaging system

SUN Hui; ZHANG Bao; LIU Jing-hong

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Restoration of motion-blurred image based on Wiener filter and its application in aerial imaging system

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- Restoration of motion-blurred image based on Wiener filter and its application in aerial imaging system
- Optics and Precision Engineering Vol. 13, Issue 6, Pages: 735-740(2005)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP391.4
- Received：22 April 2005，
  
  Revised：18 September 2005，
  
  Published Online：30 December 2005，
  
  Published：30 December 2005
- 稿件说明：
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SUN Hui, ZHANG Bao, LIU Jing-hong. Restoration of motion-blurred image based on Wiener filter and its application in aerial imaging system[J]. Optics and precision engineering, 2005, 13(6): 735-740.
DOI：

SUN Hui, ZHANG Bao, LIU Jing-hong. Restoration of motion-blurred image based on Wiener filter and its application in aerial imaging system[J]. Optics and precision engineering, 2005, 13(6): 735-740. DOI：

摘要

分析了航空成像系统运动模糊产生的机理

通过建立运动模糊数学模型

进行了消除运动模糊仿真实验。研究表明

由于成像系统与地面目标景物的相对运动

在目标图像上产生运动模糊

图像复原技术可以消除图像模糊。在图像复原技术中

点扩散函数(PSF)是影响图像恢复结果的关键因素

文中给出了估计点扩散函数的一般方法。虽然维纳滤波可以解决在逆滤波中

H(u

零点噪声放大问题

但是在图像边缘附近误差较大。采用带最优窗的维纳滤波方法可有效抑制噪声和减小边缘误差。对实验平台获取的运动模糊图像进行实验

结果表明在图像边缘像素灰度平滑条件下

可以收到近乎完美的恢复效果。

Abstract

The mechanism of generation of motion-blurred image was given. A mathematics model of motion-blurred image was built up. In addition

A procedure for estimating Point Spread Function(PSF) of motion-blurred was provided. The aerial vehicle platform and related system were quickly moving relative to ground target during the image data collection.The image might become blurred. The motion-blurred images could be restored using restoration of image. In restoration methods

Wiener filter is less sensitive to noise than inverse filter for the restoration of motion-blurred images

however

there is a large edge-error. This paper presents the optimal window technique for the restoration of motion-blurred images. With these optimal windows

near-perfect restorations can be obtained if the images vary gradually in intensity near their edge.

关键词

Keywords

references

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