Quantitative discrimination of pearls using polarization-sensitive optical coherence tomography

Lee Jae Hwi; Shin Jun Geun; Kim Hae Yeon; Lee Byeong Ha

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Quantitative discrimination of pearls using polarization-sensitive optical coherence tomography

机译：使用极化敏感光学相干断层扫描的定量判别珍珠

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We propose a robust method that can quantitatively discriminate genuine pearls from imitation ones by introducing the concept of entropy in the polarization-sensitive optical coherence tomography (PS-OCT). Qualitatively, by examining the birefringence properties of the nacre region of pearls with PS-OCT, the genuine pearls can be easily discriminated. To quantify the amount of birefringence formation, however, the concept of phase retardation entropy is introduced, which is expected to have a higher value when a PS-OCT tomogram has more diverse phase retardation values in its histogram. Experimental confirmation demonstrated that the phase retardation entropy of a genuine pearl was always higher than an imitated pearl. By experimenting with various genuine and imitation pearls, we can say that the phase retardation entropy is effective as a quantitative criterion for discriminating and evaluating pearls. (c) 2018 Optical Society of America

机译：我们提出了一种坚固的方法，可以通过在极化敏感光学相干断层扫描（PS-OCT）中引入熵的概念来定量地区分真正的珍珠。定性地，通过检查珍珠珠宝区域的双折射性质，可以容易地区分真正的珍珠。然而，为了量化双折射形成的量，引入了相延迟熵的概念，预计当PS-OCT断层照片具有更高的阶段延迟值时具有更高的值。实验证实表明，正品珍珠的相延迟熵总是高于模仿珍珠。通过尝试各种真正和仿珍珠，我们可以说相位延迟熵作为鉴别和评估珍珠的定量标准是有效的。（c）2018年光学学会

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《Applied optics》 |2018年第9期|共5页
作者
Lee Jae Hwi; Shin Jun Geun; Kim Hae Yeon; Lee Byeong Ha;
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Gwangju Inst Sci &

Technol Sch Elect Engn &

Comp Sci 123 Cheomdangwagi Ro Gwangju 61005 South Korea;

Gwangju Inst Sci &

Technol Sch Elect Engn &

Comp Sci 123 Cheomdangwagi Ro Gwangju 61005 South Korea;

Korea Pearl &

Gem Lab 16 Donhwamun Ro 6ga Gil Seoul 03138 South Korea;

Gwangju Inst Sci &

Technol Sch Elect Engn &

Comp Sci 123 Cheomdangwagi Ro Gwangju 61005 South Korea;

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Quantitative discrimination of pearls using polarization-sensitive optical coherence tomography

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