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New Phase-Shifting Method Using Two Images

  • ENVIRONMENTAL, BIOLOGICAL, AND SPACE OPTICS
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Abstract

We propose a continuous two-step method (CTSM) to obtain an image from two interference images for the measurement time reduction of optical coherence tomography. Image processing is performed for each pixel in CTSM. The calculated signal intensity has an average and standard deviation after processing since the heterodyne beat signal contains the noise in the measurements. We assume that the heterodyne beat signal contains the random noise in simulations and calculate the influence of the normalized standard deviation (NSD = standard deviation/average) on the random noise intensity for both CTSM and the conventional three-step method (TSM). We found that the NSD of the CTSM is only 1.4 times greater than that of the TSM despite processing only two images.

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Authors and Affiliations

  1. Yamagata University, Yonezawa City, Yamagata, 992-8510, Japan

    Manabu Sato, Jun Iwasaki, Toshiaki Ohotaki, Yukihiro Hashimoto & Naohiro Tanno

  2. Japan Science and Technology Corporation, Regional Joint Research Project of Yamagata Prefecture, 2-2-1 Matsuei, Yamagata, 990-2473, Japan

    Naohiro Tanno

Authors
  1. Manabu Sato
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  2. Jun Iwasaki
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  3. Toshiaki Ohotaki
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  4. Yukihiro Hashimoto
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  5. Naohiro Tanno
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Sato, M., Iwasaki, J., Ohotaki, T. et al. New Phase-Shifting Method Using Two Images. OPT REV 10, 456–461 (2003). https://doi.org/10.1007/s10043-003-0456-2

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  • DOI: https://doi.org/10.1007/s10043-003-0456-2

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