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An adaptive median filter algorithm based on B-spline function

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Abstract

According to the B-spline convolution mask, first, the contrast sensitiveness (CS) is computed and then is viewed as a noise sensitiveness coefficient (NSC) to adaptively determine a noise-recognized threshold value. Based on the noise density function (NDF) in a 3×3 window, the filtering window size is adaptively adjusted, and then a median filter is used to eliminate the noise-marked pixels. The experiment results show that the proposed algorithm can preserve image detail information well and effectively remove the noises, particularly the impulse noises that is also called salt-and-pepper noises superimposed on the computed tomography (CT) and magnetic resonance imaging (MRI) medical images.

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Authors and Affiliations

  1. College of Computer Science and Technology, Hunan University of Arts and Science, Changde, 415000, PRC

    Mei-Sen Pan

  2. Institute of Biomedical Engineering, School of Info-physics and Geomatics Engineering, Central South University, Changsha, 410083, PRC

    Mei-Sen Pan, Jing-Tian Tang & Xiao-Li Yang

Authors
  1. Mei-Sen Pan
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  2. Jing-Tian Tang
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  3. Xiao-Li Yang
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Corresponding author

Correspondence to Mei-Sen Pan.

Additional information

This work was supported by Foundation of 11th Five-year Plan for Key Construction Academic Subject (Optics) of Hunan Province, PRC, Outstanding Young Scientific Research Fund of Hunan Provincial Education Department, PRC (No. 09B071), and Scientific Research Fund of Hunan Provincial Education Department, PRC (No. 06C581).

Mei-Sen Pan graduated from Hunan Normal University, PRC in 1995. He received the M. Sc. degree from Huazhong University of Science and Technology, PRC in 2005. He is currently a professor in Hunan University of Arts and Science, and also a Ph. D. candidate in Central South University, PRC.

His research interests include biomedical image processing, information fusion, artificial neural network, and software engineering.

Jing-Tian Tang graduated and received the M. Sc. degree from Changchun University of Earth Sciences, PRC in 1986 and 1988, respectively. He received the Ph.D. degree from Central South University, PRC in 1992. He is currently a professor of Central South University, PRC.

His research interests include geophysical inverse method and theory, and medical signal processing.

Xiao-Li Yang graduated from Hunan Medical Specialty High School, PRC in 2001. She received the M. Sc. degree from Central South University of Bio-medical Technology, PRC in 2008. She is currently a Ph. D. candidate in Central South University, PRC.

Her research interests include biomedical image and signal processing.

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Pan, MS., Tang, JT. & Yang, XL. An adaptive median filter algorithm based on B-spline function. Int. J. Autom. Comput. 8, 92–99 (2011). https://doi.org/10.1007/s11633-010-0559-8

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  • DOI: https://doi.org/10.1007/s11633-010-0559-8

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