title: Automated motion correction using parallel-strip registration for wide-field en face OCT angiogram.
abstract: We propose an innovative registration method to correct motion artifacts for wide-field optical coherence tomography angiography (OCTA) acquired by ultrahigh-speed swept-source OCT (>200 kHz A-scan rate). Considering that the number of A-scans along the fast axis is much higher than the number of positions along slow axis in the wide-field OCTA scan, a non-orthogonal scheme is introduced. Two en face angiograms in the vertical priority (2 y-fast) are divided into microsaccade-free parallel strips. A gross registration based on large vessels and a fine registration based on small vessels are sequentially applied to register parallel strips into a composite image. This technique is extended to automatically montage individual registered, motion-free angiograms into an ultrawide-field view.
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA; Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Biomedical, Sciences, School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China.
authors.forename: Pengxiao
authors.initials: P
authors.lastname: Zang
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Gangjun
authors.initials: G
authors.lastname: Liu
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Miao
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA; College of Information Science and Engineering, Shandong University of Science and Technology, Qingdao, 266590, China.
authors.forename: Changlei
authors.initials: C
authors.lastname: Dongye
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Alex D
authors.initials: AD
authors.lastname: Pechauer
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Hwang
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: David J
authors.initials: DJ
authors.lastname: Wilson
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: David
authors.initials: D
authors.lastname: Huang
authors.affiliation: Shandong Province Key Laboratory of Medical Physics and Image Processing Technology, Institute of Biomedical, Sciences, School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China.
authors.forename: Dengwang
authors.initials: D
authors.lastname: Li
authors.affiliation: Casey Eye Institute, Oregon Health & Science University, Portland, OR 97239, USA.
authors.forename: Yali
authors.initials: Y
authors.lastname: Jia
keywords: (100.0100) Image processing; (100.2960) Image analysis; (110.4500) Optical coherence tomography; (170.4470) Ophthalmology