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A Polarization Angle Error Correction Method for Time-Sharing Imaging Polarization Image

A polarization angle and angle error technology, which is applied in the field of polarization information correction for the angle error of the rotating polarizer, can solve problems such as inaccurate polarization information, and achieve the effect of improving accuracy and precision

Active Publication Date: 2021-05-18
NAVAL AVIATION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention provides a polarization angle error correction method for time-sharing imaging polarization images, which aims to solve the problem of inaccurate polarization information caused by the polarization angle error in the time-sharing polarization imaging system, and effectively correct the time-sharing polarization imaging system and The polarization image acquired by it improves the precision of the polarization system and the accuracy of polarization information

Method used

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  • A Polarization Angle Error Correction Method for Time-Sharing Imaging Polarization Image
  • A Polarization Angle Error Correction Method for Time-Sharing Imaging Polarization Image
  • A Polarization Angle Error Correction Method for Time-Sharing Imaging Polarization Image

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Embodiment 1

[0046] Embodiment 1 of the present invention corrects the angle error of the polarizer of the visible light polarization system. The experimental facilities include an integrating sphere, a polarizer with an accurately calibrated angle, and the visible light polarization system to be corrected. figure 1 It is the schematic diagram of the angle error of the polarizer in the visible light polarization system.

[0047] Regarding the method for correcting the angle error of the polarizer of the visible light polarization system in Embodiment 1, the specific implementation steps include:

[0048] Step 1: Measure the angle error of the polarizer of the polarization system to be corrected.

[0049] The specific steps are:

[0050] Step 1.1, place the integrating sphere in front of the polarization system to be corrected to ensure that the light source generated by the integrating sphere fills the entire field of view; adjust the light intensity of the integrating sphere so that the ...

Embodiment 2

[0078] Embodiment 2 of the present invention corrects the angle error of the polarizer of the infrared polarization system, and the experimental facilities include a panel black body, a polarizer with an accurate calibration angle, and the infrared polarization system to be corrected. figure 2 It is the schematic diagram of the angle error of the polarizer of the infrared polarization system.

[0079] Regarding the method for correcting the angle error of the polarizer of the visible light polarization system in Embodiment 2, the specific implementation steps include:

[0080] Step 1: Measure the angle error of the polarizer of the polarization system to be corrected.

[0081] The specific steps are:

[0082] Step 1.1, place the panel blackbody in front of the polarization system to be corrected to ensure that the radiation of the panel blackbody fills the entire field of view; adjust the temperature of the blackbody so that the gray value of the polarization system is lower...

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Abstract

The invention discloses a method for correcting polarization angle errors of time-sharing imaging polarization images, which belongs to the technical field of image processing and measurement. The present invention measures the polarizer angle error of the time-sharing polarization imaging system to be corrected; then, calculates and corrects the polarization angle information of the polarized image according to Marius' law and Stokes parameters; finally, according to Marius' law, Stokes Tox parameters and the corrected polarization angle information are used to correct the degree of polarization information. The invention can eliminate the adverse influence caused by the angle error of the polarizer on the polarization information of the polarization image, reduce the measurement and calculation errors of the degree of polarization and the polarization angle image, and improve the accuracy of the polarization information of the time-sharing polarization system.

Description

technical field [0001] The present invention relates to a polarizer angle error correction method based on time-sharing imaging polarized images, in particular to a polarization information correction method for rotating polarizer angle errors. Background technique [0002] Compared with intensity imaging, polarization images increase the dimension of polarization information on the target surface (such as polarization degree and polarization angle) on the basis of it. The polarization characteristics can express rich information such as the target surface state and material, and can weaken complex backgrounds and environments. The impact on images has received extensive attention in the fields of target recognition, remote sensing, and bionic navigation. [0003] According to the structure of the polarization imaging system, it is mainly divided into two types: time-sharing imaging and simultaneous imaging. The time-sharing imaging polarization system performs polarization...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/21
CPCG01N21/21G01N21/274
Inventor 宫剑刘亮何友金仇荣超孙超修炳楠
Owner NAVAL AVIATION UNIV