1. Real-time reference A-line subtraction and saturation artifact removal using graphics processing unit for high-frame-rate Fourier-domain optical coherence tomography video imaging

    Real-time reference A-line subtraction and saturation artifact removal using graphics processing unit for high-frame-rate Fourier-domain optical coherence tomography video imaging

    Variations in the spectral shape and the amplitude of the optical coherence tomography (OCT) signal and reference cause fixed-pattern noise and light reflected from a highly specular surface might cause saturation artifacts. In real-time video-rate OCT imaging, these effects make the OCT video image appear unstable and difficult to view. To eliminate these problems, we implemented real-time reference A-line subtraction and saturation detection and correction on standard Fourier-domain optical coherence tomography (FD-OCT) video imaging frame-by-frame. This real-time OCT data processing method eliminates the need for the physical reference measurement procedure and automatically detects and corrects saturated A-scans if there is ...

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