Automated motion correction using parallelstrip registration for wide-field en face OCT angiogram

Pengxiao Zang, Gangjun Liu, Miao Zhang, Changlei Dongye, Jie Wang, Alex D. Pechauer, Thomas S. Hwang, David J. Wilson, David Huang, Dengwang Li, Yali Jia

Research output: Contribution to journalArticle

36 Scopus citations

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.

Original languageEnglish (US)
Article number263573
Pages (from-to)2823-2836
Number of pages14
JournalBiomedical Optics Express
Volume7
Issue number7
DOIs
StatePublished - Jul 1 2016

ASJC Scopus subject areas

  • Biotechnology
  • Atomic and Molecular Physics, and Optics

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