title: Self-adaptive image denoising based on bidimensional empirical mode decomposition (BEMD).
abstract: To better analyze images with the Gaussian white noise, it is necessary to remove the noise before image processing. In this paper, we propose a self-adaptive image denoising method based on bidimensional empirical mode decomposition (BEMD). Firstly, normal probability plot confirms that 2D-IMF of Gaussian white noise images decomposed by BEMD follow the normal distribution. Secondly, energy estimation equation of the ith 2D-IMF (i=2,3,4,......) is proposed referencing that of ith IMF (i=2,3,4,......) obtained by empirical mode decomposition (EMD). Thirdly, the self-adaptive threshold of each 2D-IMF is calculated. Eventually, the algorithm of the self-adaptive image denoising method based on BEMD is described. From the practical perspective, this is applied for denoising of the magnetic resonance images (MRI) of the brain. And the results show it has a better denoising performance compared with other methods.
authors.affiliation: Information & Control Engineering Faculty, Shenyang Jianzhu University, Shenyang, China.
authors.forename: Song
authors.initials: S
authors.lastname: Guo
authors.affiliation: Information & Control Engineering Faculty, Shenyang Jianzhu University, Shenyang, China.
authors.forename: Fangjun
authors.initials: F
authors.lastname: Luan
authors.affiliation: Information & Control Engineering Faculty, Shenyang Jianzhu University, Shenyang, China.
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Song
authors.affiliation: School of Mechanical Engineering and Automation, Northeastern University, Shenyang, China.
authors.forename: Changyou
authors.initials: C
authors.lastname: Li
mesh_terms: D000465:Algorithms; D016477:Artifacts; D001921:Brain / Q000033:anatomy & histology*; D003627:Data Interpretation, Statistical; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D016011:Normal Distribution; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D059629:Signal-To-Noise Ratio
keywords: BEMD; Gaussian white noise; Image denoising; energy; self-adaption