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A method for testing oil film types based on polarization characteristics

A characteristic testing and polarization technology, applied in the field of testing oil film types based on polarization characteristics, can solve data redundancy and other problems

Active Publication Date: 2021-08-20
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

However, this method is easy to cause data redundancy, and generally needs to denoise the data, which increases the workload

Method used

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  • A method for testing oil film types based on polarization characteristics
  • A method for testing oil film types based on polarization characteristics
  • A method for testing oil film types based on polarization characteristics

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Embodiment Construction

[0023] A method for testing the type of oil film based on polarization characteristics, such as figure 2 , image 3 as well as Figure 4 shown, including the following steps,

[0024] Step 1. Scattering distribution measurement in the incident plane

[0025] Place the measured oil film on the target stable platform 5, fix the azimuth angle of the light source 1, fix the azimuth angle of the detection system 3, change the elevation angle of the detection system 3 to measure the polarization characteristics, and change the angle from 0° to 90°, and change it after the measurement is completed. Light source 1 pitch angle, re-change the detection system 3 pitch angle to measure polarization characteristics, the change range of light source pitch angle is -90°~90°;

[0026] Step 2, fix the incident angle, hemispherical space detection

[0027] The measured oil film is placed on the target stable platform 5, the azimuth and elevation angle of the light source 1 are fixed, the a...

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Abstract

A method for testing the type of oil film based on polarization characteristics, belonging to the technical field of polarization characteristics testing, comprising step 1, measuring the scattering distribution in the incident plane, step 2, fixing the incident angle, detecting the hemispherical space, step 3, changing the type of oil film to be tested, Repeat the operation of step 1 and step 2 to obtain the polarization characteristic image of the measured oil film; step 4 and the 0°, 45°, 90°, 135° linear polarization images obtained in step 3 are solved by the data processing system The polarization characteristic information of Stokes parameters can be obtained, including I, Q, U, degree of polarization and polarization angle. Step 5, extract the gray value of the detection target, and apply an objective evaluation method to evaluate it, and obtain the Measure the type of oil film. The invention adopts polarization technology to detect multiple types of oil spills, can measure a single band, avoids data redundancy, shortens the measurement process, reduces workload, and has high accuracy of measurement results.

Description

technical field [0001] The invention belongs to the technical field of polarization characteristic testing, in particular to a method for testing oil film types based on polarization characteristics. Background technique [0002] With the continuous economic development of coastal areas, oil spill disasters caused by offshore oil and gas exploration and transportation have become the main type of disasters that threaten marine ecological security. The research and treatment of oil spill pollution has received extensive attention. Measuring the type of oil spilled can help with subsequent treatment. At present, the main way to detect oil film types is hyperspectral measurement. However, this method is easy to cause data redundancy, and generally needs to denoise the data, which increases the workload. [0003] Polarization has obvious advantages in target recognition and improving the contrast between the target and the background, and is widely used in optical detection. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/21
CPCG01N21/21G01N2021/216
Inventor 付强刘嘉楠史浩东刘壮李英超姜会林
Owner CHANGCHUN UNIV OF SCI & TECH
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