| 基于模糊度量的激光水下图像复原的盲去卷积方法 |
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| 引用本文： | 张威,杨克成,范泛,夏珉,傅博.基于模糊度量的激光水下图像复原的盲去卷积方法[J].光学与光电技术,2011,9(2):27-32. |
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| 作者姓名： | 张威 杨克成 范泛 夏珉 傅博 |
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| 作者单位： | 华中科技大学武汉光电国家实验室光电子科学与工程学院,湖北武汉,430074 |
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| 摘 要： | 由于水体对激光存在着不可克服的吸收和散射效应,距离选通水下激光成像系统所获得的图像存在不同程度的劣化问题,具有信噪比低、边缘模糊等特点.为提高图像质量,将基于模糊度量的盲去卷积方法应用于激光水下成像的图像复原中.结合威尔斯小角度近似得出的点扩展函数与调制传递函数,分别讨论了最大期望,最小均方与多次乘法迭代盲去卷积算法,...
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| 关 键 词： | 图像处理 图像复原 盲反卷积 点扩展函数 调制传递函数 模糊度量 |
Blind Deconvolution Approach Based on Blur Metric Method for Laser Underwater Image Restoration |
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| ZHANG Wei,YANG Ke-cheng,AN Fan,XIA Min,FU Bo.Blind Deconvolution Approach Based on Blur Metric Method for Laser Underwater Image Restoration[J].optics&optoelectronic technology,2011,9(2):27-32. |
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| Authors: | ZHANG Wei YANG Ke-cheng AN Fan XIA Min FU Bo |
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| Institution: | Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology, Wuhan 430074, China ) |
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| Abstract: | The degradation characteristic is one of the features of images acquired by range-gated underwater laser imaging systems for the reason of inevitable absorption and scattering by water. The underwater laser images have behaviors of low signal-to-noise ratio and blurry edge. In order to enhance the image quality, blind deconvolution approach based on blur metric method is used in image restoration of laser underwater imaging. Together with the discussion of point spread function and modulation transfer function obtained from Wells＇ small angle approximation, the expectation maximization, least square and multiplicative iterative blind dcconvolution algorithms are introduced respectively, and the blur metric method is used to determine the iteration time for the image restoration result of best quality. |
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| Keywords: | image processing image restoration blind deconvolution point spread function modulation transfer function blur metric |
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