Volume 17, Issue 10 e202400198
RESEARCH ARTICLE

Motion Artifact Correction for OCT Microvascular Images Based on Image Feature Matching

Xudong Chen

Xudong Chen

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

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Zongqing Ma

Corresponding Author

Zongqing Ma

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

Correspondence:

Zongqing Ma ([email protected])

Jiang Zhu ([email protected])

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Chongyang Wang

Chongyang Wang

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

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Jiaqi Cui

Jiaqi Cui

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

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Fan Fan

Fan Fan

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

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Xinxiao Gao

Xinxiao Gao

Beijing Anzhen Hospital, Capital Medical University, Beijing, China

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Jiang Zhu

Corresponding Author

Jiang Zhu

Key Laboratory of the Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing, China

Correspondence:

Zongqing Ma ([email protected])

Jiang Zhu ([email protected])

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First published: 28 August 2024
Citations: 2

Funding: This work was supported by National Key Research and Development Program of China (2022YFC3502301 and 2022YFC3502300), National Natural Science Foundation of China (61975019), R&D Program of Beijing Municipal Education Commission (KZ202011232050 and KM202311232021), and the Young Backbone Teacher Support Plan of Beijing Information Science & Technology University (YBT202410).

ABSTRACT

Optical coherence tomography angiography (OCTA), a functional extension of optical coherence tomography (OCT), is widely employed for high-resolution imaging of microvascular networks. However, due to the relatively low scan rate of OCT, the artifacts caused by the involuntary bulk motion of tissues severely impact the visualization of microvascular networks. This study proposes a fast motion correction method based on image feature matching for OCT microvascular images. First, the rigid motion-related mismatch between B-scans is compensated through the image feature matching based on the improved oriented FAST and rotated BRIEF algorithm. Then, the axial motion within A-scan lines in each B-scan image is corrected according to the displacement deviation between the detected boundaries achieved by the Scharr operator in a non-rigid transformation manner. Finally, an optimized intensity-based Doppler variance algorithm is developed to enhance the robustness of the OCTA imaging. The experimental results demonstrate the effectiveness of the method.

Conflicts of Interest

The authors declare no conflicts of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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