Universal digital filtering for denoising volumetric retinal OCT and OCT angiography in 3D shearlet domain

doi:10.1364/OL.383701

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Universal digital filtering for denoising volumetric retinal OCT and OCT angiography in 3D shearlet domain
	Yang, Jianlong; Hu, Yan; Fang, Liyang; Cheng, Jun; Liu, Jiang
刊名	OPTICS LETTERS
	2020
卷号	45 期号:3 页码:694-697
关键词	SPECKLE REDUCTION COHERENCE IMAGES
DOI	10.1364/OL.383701
英文摘要	Retinal optical coherence tomography (OCT) and OCT angiography (OCTA) suffer from the degeneration of image quality due to speckle noise and bulk-motion noise, respectively. Because the cross-sectional retina has distinct features in OCT and OCTA B-scans, existing digital filters that can denoise OCT efficiently are unable to handle the bulkmotion noise in OCTA. In this Letter, we propose a universal digital filtering approach that is capable of minimizing both types of noise. Considering that the retinal capillaries in OCTA are hard to differentiate in B-scans while having distinct curvilinear structures in 3D volumes, we decompose the volumetric OCT and OCTA data with 3D shearlets, thus efficiently separating the retinal tissue and vessels from the noise in this transform domain. Compared with wavelets and curvelets, the shearlets provide better representation of the layer edges in OCT and the vasculature in OCTA. Qualitative and quantitative results show the proposed method outperforms the state-of-the-art OCT and OCTA denoising methods. Also, the superiority of 3D denoising is demonstrated by comparing the 3D shearlet filtering with its 2D counterpart. (C) 2020 Optical Society of America
学科主题	Optics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20082]
专题	2020专题
作者单位	Yang, JL (corresponding author), Chinese Acad Sci, Cixi Inst Biomed Engn, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Yang, Jianlong,Hu, Yan,Fang, Liyang,et al. Universal digital filtering for denoising volumetric retinal OCT and OCT angiography in 3D shearlet domain[J]. OPTICS LETTERS,2020,45(3):694-697.
APA	Yang, Jianlong,Hu, Yan,Fang, Liyang,Cheng, Jun,&Liu, Jiang.(2020).Universal digital filtering for denoising volumetric retinal OCT and OCT angiography in 3D shearlet domain.OPTICS LETTERS,45(3),694-697.
MLA	Yang, Jianlong,et al."Universal digital filtering for denoising volumetric retinal OCT and OCT angiography in 3D shearlet domain".OPTICS LETTERS 45.3(2020):694-697.