Frequency-domain optical coherence tomography (FDOCT) has been widely applied in medical image inspection. This paper presents an image formation processor capable of performing all FDOCT imaging operations, including DC noise removal, re-sampling, real-valued fast Fourier transform (RFFT), and display processing. A hardware-efficient RFFT unit and memory-based display processing engine make it possible to generate gray-scale display data at high OCT imaging rates. System-level design verification was performed using an FPGA platform and a mobile phone to evaluate the efficacy of the proposed scheme.
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Tang et al. (2018) studied this question.
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