Spectroscopy and Spectral Analysis, Volume. 42, Issue 5, 1478(2022)

An Interpolation Method for Raman Imaging Using Voigt Function

Xian-guang FAN*... Yan-rui HUANG1;, Long LIU1;, Ying-jie XU1; and Xin WANG1; 2; *; |Show fewer author(s)
Author Affiliations
  • 1. Department of Instrumental and Electrical Engineering, School of Aerospace Engineering, Xiamen University, Xiamen 361005, China
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    Figures & Tables(10)
    Flow of the proposed interpolation algorithm for Raman imaging
    Interpolation strategy of VFI
    The principle of Voigt function fitting interpolation points with adjacent points in Mode 1(a): Voigt function of point 1; (b): Voigt function of point 3; (c): Voigt function of point 2
    Experimental comparison image of tablet 1 and cell 1 in mode 1(a): The image to be interpolated of tablet 1 (The spatial resolution is 19×105); (b): The image after interpolating one row in (a) (37×105); (c): The contrast image was collected with the same spatial resolution as (b) (37×105); (d): The image to be interpolated of cell 1 (The spatial resolution is 19×189); (e): The image after interpolating one row in (d) (37×189); (f): The contrast image was collected with the same spatial resolution as (e) (37×189)
    Experimental comparison image of tablet 1 and cell 1 in mode 2(a): The image to be interpolated of tablet 1 (The spatial resolution is 19×53); (b): The image after interpolating one point in (a) (37×105); (c): The contrast image was collected with the same spatial resolution as (b) (37×105); (d): The image to be interpolated of cell 1 (19×95); (e): The image after interpolating one point in (d) (37×189); (f): The contrast image was collected with the same spatial resolution as (e) (37×189)
    Compound histogram of interpolated one line/one point Raman image and same spatial resolution contrast Raman image of tablet 1 and cell 1 in two modes(a): Compound histogram of tablet 1 in mode 1; (b): Compound histogram of cell 1 in mode 1; (c): Compound histogram of tablet 1 in mode 2; (d): Compound histogram of cell 1 in mode 2
    Raman images of tablet 1 and cell 1 interpolated by VFI with different number of interpolations in mode 1(a): Table 1 interpolates 3 lines of Raman image (145×105); (b): Table 1 interpolates 7 lines of Raman image (289×105); (c): Cell 1 interpolates 3 lines of Raman image (145×189); (d): Cell 1 interpolates 7 lines of Raman image (289×189)
    Raman images of tablet 1 and cell 1 at different scanning intervals and after interpolation in mode 1(a): Raman image of tablet 1 (The spatial resolution is 9×105); (b): Raman image of tablet 1(5×105); (c): Raman image of cell 1(9×189); (d): Raman image of cell 1(5×189);(e): Interpolated Raman image of tablet 1 (37×105); (f): Interpolated Raman image of tablet 1 (37×105);(g): Interpolated Raman image of cell 1(37×189); (h): Interpolated Raman image of cell 1(37×189)
    Diagram of component information loss(a): Raman image of cell 1 (The spatial resolution is 37×105); (b) Raman image of cell 1(19×105); (c): Interpolated Raman image of (b)
    • Table 1. Histogram Euclidean distances and SSIM values for the two samples

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      Table 1. Histogram Euclidean distances and SSIM values for the two samples

      Sample nameEuclidean distance
      (mode 1/mode 2)
      SSIM
      (mode 1/mode 2)
      Cefuroxime axetil0.029/0.0350.986/0.982
      Cervical cancer cell0.018/0.0200.998/0.990
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    Xian-guang FAN, Yan-rui HUANG, Long LIU, Ying-jie XU, Xin WANG. An Interpolation Method for Raman Imaging Using Voigt Function[J]. Spectroscopy and Spectral Analysis, 2022, 42(5): 1478

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    Paper Information

    Category: Research Articles

    Received: Apr. 12, 2021

    Accepted: --

    Published Online: Nov. 10, 2022

    The Author Email: FAN Xian-guang (fanxg@xmu.edu.cn)

    DOI:10.3964/j.issn.1000-0593(2022)05-1478-06

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