| 自适应非局部均值地震随机噪声压制(英文) |
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| 引用本文： | 尚帅,韩立国,吕庆田,谭尘青.自适应非局部均值地震随机噪声压制(英文)[J].应用地球物理,2013,10(1):33-40. |
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| 作者姓名： | 尚帅 韩立国 吕庆田 谭尘青 |
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| 作者单位： | 吉林大学地球探测科学与技术学院;中国地质科学院 |
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| 基金项目： | supported by the National Natural Science Foundation of China(No.41074075);National Science and Technology Project(SinoProbe-03);National public industry special subject(No. 201011047-02);Graduate Innovation Fund of Jilin University(No. 20121070) |
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| 摘 要： | 非局部均值滤波是一种基于图像信息冗余的去噪方法,其认为图像自身的有效结构具有一定的重复性,而随机噪声则不具备这一特点,通过利用图像本身的自相似性来达到压制随机噪声的目的,是一种全局的去噪方法。本文把这一思想引入地震数据随机噪声压制中,针对传统非局部均值滤波计算量过大的问题,文章采用分块非局部均值的方式来减少计算量;针对滤波参数选取会影响非局部均值滤波效果的问题,提出一种简单的自适应滤波参数地震数据分块非局部均值算法。模型和实际数据处理结果表明:相对于传统的去噪算法(如f-x反褶积),该方法在压制随机噪声的同时对有效信号保护地更好,具有更高的保真度,更有利于后续的处理和解释工作。
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| 关 键 词： | 地震勘探 自适应 非局部均值 随机噪声压制 |
Seismic random noise suppression using an adaptive nonlocal means algorithm |
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Shang Shuai
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Han Li-Guo
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Lv Qing-Tian
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Tan Chen-Qing.Seismic random noise suppression using an adaptive nonlocal means algorithm[J].Applied Geophysics,2013,10(1):33-40. |
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| Authors: | ,
Shang Shuai
,
Han Li-Guo
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Lv Qing-Tian
,
Tan Chen-Qing |
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| Institution: | 1. College of Geo-Exploration Science and Technology, Jilin University, Changchun 130026, China
2. Chinese Academy of Geological Sciences, Beijing 100000, China |
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| Abstract: | Nonlocal means filtering is a noise attenuation method based on redundancies in image information. It is also a nonlocal denoising method that uses the self-similarity of an image, assuming that the valid structures of the image have a certain degree of repeatability that the random noise lacks. In this paper, we use nonlocal means filtering in seismic random noise suppression. To overcome the problems caused by expensive computational costs and improper filter parameters, this paper proposes a block-wise implementation of the nonlocal means method with adaptive filter parameter estimation. Tests with synthetic data and real 2D post-stack seismic data demonstrate that the proposed algorithm better preserves valid seismic information and has a higher accuracy when compared with traditional seismic denoising methods (e.g., f-x deconvolution), which is important for subsequent seismic processing and interpretation. |
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| Keywords: | seismic prospecting adaptive nonlocal means random noise attenuation |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
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