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兵工学报 ›› 2013, Vol. 34 ›› Issue (10): 1231-1235.doi: 10.3969/j.issn.1000-1093.2013.10.006

• 论文 • 上一篇    下一篇

Radon 变换对短模糊尺度下匀速直线运动模糊参数的准确估计

段若颖1, 谌德荣1, 蒋玉萍2, 关咏梅2, 高翔霄2   

  1. 1. 北京理工大学机电工程与控制国家重点实验室, 北京100081; 2. 北京宇航系统工程研究所, 北京100076
  • 收稿日期:2012-11-06 修回日期:2012-11-06 上线日期:2013-12-16
  • 作者简介:段若颖(1987—),女,硕士研究生。
  • 基金资助:
    “十二五冶国防基础科研基金项目(B2220132013)

Accurate Estimation of Motion Blur Parameters at Short Blurred Extent Based on Radon Transform

DUAN Ruo-ying1, CHEN De-rong1, JIANG Yu-ping2, GUAN Yong-mei2, GAO Xiang-xiao2   

  1. 1. National laboratory for Mechatronic and Control,Beijing Institute of Technology, Beijing 100081, China; 2. Beijing Institute of Astronautical Systems Engineering, Beijing 100076, China
  • Received:2012-11-06 Revised:2012-11-06 Online:2013-12-16

摘要: 为提高短模糊尺度下的运动模糊参数估计精度,提出了一种改进的基于Radon 变换的频域估计算法。算法对运动模糊图像傅里叶变换频谱图做Radon 变换,利用运动模糊图像频谱图 在垂直于条纹方向下Radon 变换时为明暗投影线的特性,在Radon 变换图中确定明暗投影线,由该 投影线对应的Radon 变换角度和运动模糊图像的分辨率求解运动模糊参数。对Lena 图像的仿真 结果表明:当模糊尺度为5 ~ 10 时,对模糊方向的估计误差小于1毅,对模糊尺度的估计误差小于 0. 5 个像素,优于现有算法的估计精度。

关键词: 兵器科学与技术, 短模糊尺度, Radon 变换, 运动模糊参数, 绝对误差

Abstract: An improved algorithm based on Radon transform is proposed to identify the motion blur parameters of image at short blurred extent more accurately. Considering that the spectrogram of motion blurred image is transformed into an alternate dark and bright projection line at perpendicular direction of dark stripe by Radon transform, the position of alternate dark and bright projection line in Radon transform image should be determined. The motion blur parameters can be determined by the Radon transform angle which corresponds to the projection line and the resolution of motion blurred image. The experimental results show that the estimated error in blurred direction is less than 1°and the estimated error of blurred extent is less than 0. 5 pixels when the blurred extent is 5 ~10 pixels. The estimation accuracy of improved algorithm is higher than other algorithm at short blurred extent.

Key words: ordnance science and technology, short blurred extent, Radon transform, motion blur parameter, absolute error

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