Optical Coherence Tomography Angiography(OCTA)technology is a angiography method based on motion contrast.Despite improved acquisition speed,eye movement is still the main cause of artifacts.The paper describes a method for integrating an active fundus tracking Scanning Laser Ophthalmoscope(SLO)system based on hardware into the OCTA system.During the OCTA acquisition process,the SLO system is also synchronously started,and the imaging is performed,and GPU parallel processing Frangi filtering and four-quadrant corner matching offset calculation methods is used for real-time eye movement correction,which can eliminate eye movement artifacts and achieve the effect of high-precision imaging of retinal fundus blood flow structure.
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