| 基于同步噪声选择非局部平均除噪声的最优参数 |
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| 引用本文： | 刘鹏,刘定生,李国庆,刘志文.基于同步噪声选择非局部平均除噪声的最优参数[J].光电子．激光,2011(7):1107-1111. |
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| 作者姓名： | 刘鹏 刘定生 李国庆 刘志文 |
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| 作者单位： | 中国科学院对地观测与数字地球科学中心；;中国科学院对地观测与数字地球科学中心；;中国科学院对地观测与数字地球科学中心；;中国科学院对地观测与数字地球科学中心； |
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| 基金项目： | 中国科学院对地观测与数字地球科学中心主任基金;国家自然科学基金共同资助项目(41001265) |
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| 摘 要： | 提出基于同步噪声和信噪比（SNR）自动选择非局部平均（NCM）的核函数参数的算法。为了正确估计平滑图像中的剩余噪声,一幅纯噪声图像作为同步噪声与观测图像同步进行计算,同步噪声作为图像剩余噪声的估计值。为了保持同步噪声与剩余噪声的统计特性相似,提出了一种新的NCM算子,依据图像的特征对同步噪声进行平滑,能够保持两种噪声有...
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| 关 键 词： | 非局部平均(NCM) 同步噪声 最优参数 |
Selection of the optimal parameter in non-local means denoising based on synchronous noise |
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| LIU Peng,LIU Ding-sheng,LI Guo-qing and LIU Zhi-wen.Selection of the optimal parameter in non-local means denoising based on synchronous noise[J].Journal of Optoelectronics·laser,2011(7):1107-1111. |
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| Authors: | LIU Peng LIU Ding-sheng LI Guo-qing and LIU Zhi-wen |
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| Affiliation: | Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China;Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China;Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China;Center for Earth Observation and Digital Earth,Chinese Academy of Sciences,Beijing 100086,China |
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| Abstract: | In this paper a new method for selecting the optimal kernel width for non-local means denoising is proposed.The rule of the stopping time is based on signal noise ratio(SNR).In order to correctly estimate the level of noise in non-local means denoising,a pure synthesis noise as an auxiliary is synchronously smoothed with the image.The auxiliary noise is taken as the estimation of the remaining noise in the estimated image.A new non-local means smoothing operator that can ensure the synchronous c... |
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| Keywords: | non-local means(NLM) synchronous noise optimal parameter |
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