7 March 2016 Pixel super-resolution of time-stretch imaging by an equivalent-time sampling concept
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Optical time-stretch imaging entails a stringent requirement of state-of-the-art high-speed data acquisition unit in order to preserve high image resolution at an ultrahigh frame rate — hampering the widespread application of such technology. We here propose a pixel super-resolution (pixel SR) technique tailored for time-stretch imaging that can relax the sampling rate requirement. It harnesses a concept of equivalent-time sampling, which effectively introduces sub-pixel shifts between frames. It involves no active opto-mechanical subpixel-shift control and any additional hardware. We present the system design rules and a proof-of-principle experiment which restores high-resolution images at a relaxed sampling rate of 5 GSa=s.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Antony C. S. Chan, Antony C. S. Chan, Edmund Y. Lam, Edmund Y. Lam, Kevin K. Tsia, Kevin K. Tsia, } "Pixel super-resolution of time-stretch imaging by an equivalent-time sampling concept", Proc. SPIE 9720, High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management, 972004 (7 March 2016); doi: 10.1117/12.2212034; https://doi.org/10.1117/12.2212034


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