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Reconstruction detector based on light-field camera and frequency modulation laser and applied to optical parameter distribution of dispersion media and reconstruction method

A technology of dispersive media and optical parameters, which is applied in measuring devices, material analysis through optical means, scientific instruments, etc., can solve problems such as complex devices and inability to distinguish radiation intensity signals, and achieve improved measurement efficiency, good imaging effects, and systematic simple effect

Active Publication Date: 2016-10-12
虚拟现实数字技术研究院(哈尔滨)有限公司
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Problems solved by technology

[0005] The present invention aims to solve the problems of complex devices and inability to distinguish radiation intensity signals from various directions in the optical coefficient reconstruction process of traditional contact measurement

Method used

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  • Reconstruction detector based on light-field camera and frequency modulation laser and applied to optical parameter distribution of dispersion media and reconstruction method
  • Reconstruction detector based on light-field camera and frequency modulation laser and applied to optical parameter distribution of dispersion media and reconstruction method
  • Reconstruction detector based on light-field camera and frequency modulation laser and applied to optical parameter distribution of dispersion media and reconstruction method

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine figure 1 To describe this embodiment,

[0024] A reconstruction detection device for optical parameter distribution of a diffuse medium based on a light field camera and a frequency-modulated laser, including: a laser controller 1, a laser head 2, at least one light field camera 4, and a data acquisition and processing system 5;

[0025] One end of the laser controller 1 (laser control signal output end) is connected to the laser control signal output end of the laser head 2, and the other end of the laser controller 1 is connected to the data acquisition and processing system 5; the laser head 2 is facing the dispersive medium 3; the light field camera 4 are distributed around the dispersive medium 3, the signal output end of the light field camera 4 is connected to the input end of the data acquisition and processing system 5; the data acquisition and processing system 5 processes the obtained radiation field signal, and calcu...

specific Embodiment approach 2

[0026] Specific implementation mode two: combination figure 1 and figure 2 To describe this embodiment,

[0027] A method for reconstructing the optical parameter distribution of a diffuse medium by using a reconstruction detection device based on a light field camera and a frequency-modulated laser for optical parameter distribution of a diffuse medium includes the following steps:

[0028] Step 1: Turn on the laser controller 1, make the frequency-modulated laser emitted by the laser head 2 incident on the dispersion medium 3, then rotate the dispersion medium 3 n times, and irradiate the dispersion medium 3 with the laser, n≥0;

[0029] Every time the laser head 2 emits laser light, the light field camera 4 is used to collect the radiation field signals transmitted or reflected by the diffuse medium, and then all the obtained radiation field signals are sent to the data acquisition and processing system 5, and the data acquisition and processing system 5 respectively The...

specific Embodiment approach 3

[0035] The optical parameter field μ described in this embodiment includes the absorption coefficient μ of the dispersive medium a and the scattering coefficient μ s , the absorption coefficient μ of the dispersion medium a and the scattering coefficient μ s The distribution images of are reconstructed simultaneously.

[0036] Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention provides a reconstruction detector based on a light-field camera and a frequency modulation laser and applied to optical parameter distribution of dispersion media and a reconstruction method, relates to a reconstruction detector for the optical parameter distribution of the dispersion media and a reconstruction method for the optical parameter distribution of dispersion media and aims to solve the problems that a device is complicated and radiation intensity signals in all directions are indistinguishable in a reconstruction process of the optical parameters adopting traditional contact measurement. The reconstruction detector for the optical parameter distribution of the dispersion media comprises a laser controller, a laser head, at least one light-field camera and a data collecting and processing system; radiation intensity information in all directions of the borders of the dispersion media under the action of the frequency modulation laser is acquired by the light-field camera, distribution images of absorption and scattering coefficients in the media are reconstructed through simulation of an infrared radiation transmission process in the dispersion media in combination with the optimization method, and internal structures of the dispersion media are obtained through detection. The reconstruction detector and the reconstruction method are suitable for the field of reconstruction of the optical parameter distribution of the dispersion media.

Description

technical field [0001] The invention relates to a reconstruction detecting device for the optical parameter distribution of a diffuse medium and a reconstruction method for the optical parameter distribution. Background technique [0002] The reconstruction of the distribution of optical parameters inside the dispersive medium is to invert the internal optical parameter field by analyzing the measurement signal at the boundary of the medium. Since the distribution of the absorption and scattering coefficients inside the medium is related to the structure inside the medium, the reconstruction of the absorption and scattering coefficients inside the dispersive medium Technology helps to probe the internal geometry of media. As an effective detection technique, optical parameter field reconstruction of diffuse media is widely used in nondestructive detection, optical imaging, infrared remote sensing, information processing and fault diagnosis and other fields. [0003] When th...

Claims

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Application Information

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IPC IPC(8): G01N21/17
CPCG01N21/17G01N2021/1734
Inventor 齐宏乔要宾阮世庭阮立明谈和平周鹜蔡小舒
Owner 虚拟现实数字技术研究院(哈尔滨)有限公司
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