[Study of Motion Artifacts Correction Algorithm in Optical Coherence Tomography Images Based on C-Scan of Optic Disc].

ABSTRACT

Optical Coherence Tomography(OCT) system may cause dislocations and distortions of the collected image volumetric?data when proceeding dynamic 3D imaging because of the involuntary movements of eyebal, which wil result in misdiagnoses during clinical diagnosis. The optic disk region of human eye has much more complex structure and further more blood vessels compared with macular region, which means the conventional image correction method aiming at macular region can not apply to optic disk region. In this paper, we propose a X direction artifact correcting method based on pixel row correlation matching algorithm of C-Scan, specifi c to the structural features of human eye optic disk region OCT images. Moreover, using this method, we can estimate whether the image sequences with motion artifacts have part image repetition or missing or not, and we can further confi rm the positions and numbers of repetition and missing with the help of Y direction 2D scan images. Model verifi cation indicates that this method can effectively rebuild the real image sequences and truly refl ect the physiology structure of retina.