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Department自适应光学技术研究室(八室)
Improved wavelet hierarchical threshold filter method for optical coherence tomography image de-noising
Cao, Jing1; Wang, Pinghe1; Wu, Bo2; Shi, Guohua1,3; Zhang, Yan4; Li, Xiqi5,6; Zhang, Yudong5,6; Liu, Yong1
Source PublicationJOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES
Volume11Issue:3Pages:1850012
2018-05-01
Language英语
ISSN1793-5458
DOI10.1142/S1793545818500128
Indexed BySCI ; Ei
WOS IDWOS:000431314200007
EI Accession Number20181905142519
SubtypeJ
AbstractAccording to the speckle feature in Optical coherence tomography (OCT), images with speckle indicate not only noise but also signals, an improved wavelet hierarchical threshold filter (IWHTF) method is proposed. At first, a modified hierarchical threshold-selected algorithm is used to prevent signals from being removed by assessing suitable thresholds for different noise levels. Then, an improved wavelet threshold function based on two traditional threshold functions is proposed to trade-off between speckle removing and sharpness degradation. The de-noising results of an OCT finger skin image shows that the IWHTF method obtains better objective evaluation metrics and visual image quality improvement. When alpha - 0.2, beta - 5.0 and K - 1,2, the improved method can achieve 9.58 dB improvement in signal-to-noise ratio, with sharpness degraded by 3.81%.
KeywordOptical coherence tomography wavelets speckle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/9384
Collection自适应光学技术研究室(八室)
Affiliation1.School of Optoelectronic Information, University of Electronic Science and Technology of China, No. 4, North Jianshe Road, Chengdu; 610054, China;
2.College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu; 610225, China;
3.Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou; 215163, China;
4.School of Electronic and Communication Engineering, Guiyang University, Guiyang; 550005, China;
5.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
6.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu; 610209, China
Recommended Citation
GB/T 7714
Cao, Jing,Wang, Pinghe,Wu, Bo,et al. Improved wavelet hierarchical threshold filter method for optical coherence tomography image de-noising[J]. JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES,2018,11(3):1850012.
APA Cao, Jing.,Wang, Pinghe.,Wu, Bo.,Shi, Guohua.,Zhang, Yan.,...&Liu, Yong.(2018).Improved wavelet hierarchical threshold filter method for optical coherence tomography image de-noising.JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES,11(3),1850012.
MLA Cao, Jing,et al."Improved wavelet hierarchical threshold filter method for optical coherence tomography image de-noising".JOURNAL OF INNOVATIVE OPTICAL HEALTH SCIENCES 11.3(2018):1850012.
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