Reconstruction method of optical property parameters of fruit pulp tissue

A technology for pulp and fruit, applied in the field of reconstruction of optical characteristic parameters of fruit pulp tissue, to achieve the effects of improving calculation efficiency, increasing matching degree, and simplifying the calibration process

Active Publication Date: 2016-02-17
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for reconstructing the optical characteristic parameters of fruit pulp tissue, so as to solve the problem that the existing technology cannot quickly complete the reconstruction of the optical characteristic parameters of the tissue

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  • Reconstruction method of optical property parameters of fruit pulp tissue

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Embodiment 1

[0024] Such as figure 1 Shown is a flowchart of a method for reconstructing optical characteristic parameters of fruit pulp tissue provided by an embodiment of the present invention, and the method includes the following steps:

[0025] Step S101, acquire the spectrum of the fruit pulp tissue through the optical fiber probe, describe the spectrum as a two-dimensional digital matrix, and acquire the distance between the receiving optical fiber and the emitting optical fiber in the optical fiber probe.

[0026] In the embodiment of the present invention, the optical fiber probe usually includes 1 transmitting optical fiber and 3 receiving optical fibers. The spectrum of the fruit pulp tissue can be obtained through the receiving optical fiber. The spectrum is described as a two-dimensional digital matrix, and the elements in the matrix correspond to the fruit pulp. The spatial diffuse reflectance of the tissue, the row direction of the matrix corresponds to the change of the spe...

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Abstract

The invention is applied to the field of optical property parameter measurement, and provides a reconstruction method of optical property parameters of fruit pulp tissue. The method comprises the steps that by means of a theoretical relation curve of of a Monte Carlo random simulation reduced scattering coefficient and space diffuse reflectance, a real curve of the relation in a polystyrene microsphere solution is obtained; the maximum space diffuse reflectance and the corresponding reduced scattering coefficients of the theoretical relation curve and the real curve are determined, and calibration is completed; a diffusion approximate equation and a least square optimizing method are used, an initial reduced scattering coefficient and an initial absorption coefficient of fruit pulp tissue at different wavelengths are searched; a reduced scattering coefficient reconstruction value of the fruit pulp tissue at the different wavelengths is obtained by utilizing an experience formula parameter fitting method; by combining the reduced scattering coefficient reconstruction value, fitting is conducted on the diffusion approximate equation again, and an absorption coefficient reconstruction value of the fruit pulp tissue at the different wavelengths is obtained. According to the reconstruction method of the optical property parameters of the fruit pulp tissue, the tissue optical property parameters of the fruit pulp can be rapidly reconstructed at low cost.

Description

technical field [0001] The invention belongs to the field of optical characteristic parameter measurement, in particular to a method for reconstructing optical characteristic parameters of fruit pulp tissue. Background technique [0002] In recent years, the tissue optical parameters of fruits have been widely used in the rapid and non-destructive detection of various characteristics and parameters of the internal quality of fruits. Typical applications include predicting the sugar content of fruits, the hardness of fruit pulp, and the shelf life of fruits, etc. The types of fruit objects used are gradually being promoted. [0003] In the measurement of optical transmission characteristics of fruit pulp tissue, the main parameters of tissue optical characteristics are absorption coefficient and reduced scattering coefficient. The absorption coefficient can quantitatively analyze the content of chemical or constituent substances in the pulp, and the reduced scattering coeffi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/47
CPCG01N21/31G01N21/4738
Inventor 周扬刘铁兵陈正伟
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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