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Multi-channel Raman spectrum reconstruction method and terminal equipment, and storage medium

A Raman spectrum, multi-channel technology, applied in the field of multi-channel Raman spectrum reconstruction, can solve problems such as the inability to suppress the interference of nonlinear factors, and the difficulty in realizing real-time exploration of the substance to be measured, so as to suppress nonlinear influencing factors, improve accuracy, Optimize the effect of training samples

Inactive Publication Date: 2019-05-03
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the scanning mode, the widefield mode can obtain higher spatial resolution and better dynamic performance, but can only collect single-wavelength spectra in two spatial dimensions
[0004] These processing methods have their own advantages and scope of application, but a common shortcoming is that these methods have improved the time of acquiring Raman spectra compared with conventional Raman spectrometers, but it is still difficult to realize the real-time change of the substance to be measured over time. Exploration, while unable to suppress the interference of non-linear factors

Method used

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  • Multi-channel Raman spectrum reconstruction method and terminal equipment, and storage medium
  • Multi-channel Raman spectrum reconstruction method and terminal equipment, and storage medium
  • Multi-channel Raman spectrum reconstruction method and terminal equipment, and storage medium

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Embodiment 1

[0040] refer to figure 1 As shown, the present invention provides a multi-channel Raman spectrum reconstruction method, which includes training samples and analyte substances, wherein the training samples are used to train the model, and the analyte substances complete Raman according to the trained model. Spectral reconstruction.

[0041] The method comprises the steps of:

[0042] S1: Get the Raman spectrum data set R of the training samples from the Raman spectrometer:

[0043] R={r 1 ,r 2 ,...,r i ,...,r k}

[0044] Among them, R is an n×k-dimensional matrix, n is the number of sampling points, k is the sample size, figure 2 Shown is the Raman spectrum of a substance.

[0045] S2: Obtain the multi-channel spectral data set U of the training sample through the multi-channel optical system:

[0046] U={u 1 ,u 2 ,...,u i ,...,u k}

[0047] Among them, U is a g×k-dimensional matrix, g is the number of multi-channels, and k is the sample size.

[0048] S3: Perfo...

Embodiment 2

[0069] The present invention also provides a multi-channel Raman spectrum reconstruction terminal device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program The steps in the above method embodiment of Embodiment 1 of the present invention are realized.

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Abstract

The invention relates to a multi-channel Raman spectrum reconstruction method and terminal equipment, and a storage medium. The method includes the following steps: S1, obtaining a Raman spectrum dataset of a training sample; S2, obtaining a multi-channel Raman spectrum data set of the training sample; S3, performing second-order polynomial regression expansion on the multi-channel Raman spectrumdata set; S4, estimating the Raman spectrum data of a to-be-detected substance, judging the similarity of the Raman spectrum data of the to-be-detected substance and the Raman spectrum data set of the training sample, and giving corresponding weight to the Raman spectrum data set and multi-channel Raman spectrum data set of the training sample according to the similarity; S5, calculating a transfer matrix W according to Wiener estimation; and S6, obtaining the multi-channel spectrum data u of the to-be-detected substance to perform expansion, and reconstructing the Raman spectrum of the to-be-detected substance through a formula r = W * u according to the multi-channel spectrum data u of the to-be-detected substance and the transfer matrix W. Thus, the Raman spectrum can be rapidly reconstructed, so that the time of obtaining the Raman spectrum can be greatly shortened, and convenient research on the law of changing with time can be achieved.

Description

technical field [0001] The invention relates to the technical field of spectrum reconstruction, in particular to a multi-channel Raman spectrum reconstruction method, a terminal device and a storage medium. Background technique [0002] Raman spectroscopy was developed on the basis of the Raman scattering effect discovered by Indian scientist C.V.Raman. It is a detection technology for analyzing molecular chemical composition, structure and other information. It has rich information, simple sample preparation, and water interference. Small and non-invasive, it can obtain the spectral information of tissues or cells under close to physiological conditions, so as to explain life-related phenomena from the molecular level, so it occupies an increasingly important position in the fields of life sciences and biomedicine. However, Raman scattering is inefficient, and spontaneous Raman signals in most biological samples are weaker than fluorescent signals or elastic scattering. Th...

Claims

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Application Information

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IPC IPC(8): G01N21/65G06K9/62
Inventor 刘龙范贤光王昕
Owner XIAMEN UNIV