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V-component containing all-component polarized remotely-sensed imaging measurement system and method

A polarization remote sensing and imaging measurement technology, which is applied in the field of measurement systems and can solve problems such as research on the relationship between four-component images or applications, research, and integrated synchronous acquisition of incomplete-component images.

Active Publication Date: 2014-03-19
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, some units have carried out research on polarization laser radar devices and measurement technology. Although this device can accurately measure the V component, as an active detection device, it cannot be applied in the widely used passive detection.
[0005] Due to the limitations of previous technical means, in the field of polarization measurement of ground objects, the last component of the Stokes vector, that is, the V component, is often not obtained
Nowadays, scholars at home and abroad have noticed the measurement of the V component, but they are only limited to the technical research on obtaining this component, and have not done further research on the characteristic model of the component measurement in essence, nor have they done any research on the I including the V component. , Q, U, and V full-component images are acquired synchronously, and there is no research or application on the relationship between the four-component images

Method used

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  • V-component containing all-component polarized remotely-sensed imaging measurement system and method
  • V-component containing all-component polarized remotely-sensed imaging measurement system and method
  • V-component containing all-component polarized remotely-sensed imaging measurement system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1: Obtaining unique information features of the V component and obtaining physical components such as spectrum and intensity

[0058] 1. Under ideal lighting conditions in the laboratory:

[0059] 1) Irradiate the surface of the rock sample with unpolarized light and linearly polarized light at different irradiation angles, and use the polarization parameter measurement device to detect various polarization parameters of the reflected light, especially the polarization phase parameter corresponding to the V component, and ensure that the experiment has good reliability. Repeatability, at the same time, in the experiment, the calculation model is continuously optimized, the transmission error is reduced and the modulation error is eliminated, so that the V component polarization image is very close to the actual characteristics of the ground object;

[0060] 2) Rotate the rock sample with the normal of the irradiated light reflection surface (rock surface) as the...

Embodiment 2

[0070] Embodiment 2: Obtain moving picture feature parameter by a group of I, Q, U, V four-component map

[0071] Such as Figure 9 As shown (the upper left corner is the I component imaging image, the upper right corner is the Q component imaging image, the lower left corner is the U component imaging image, and the lower right corner is the V component imaging image), the existing position changes of the moving target can be seen from the four component images , and behavioral changes. By decomposing them into vectors, we can not only obtain the result of analyzing the characteristics of moving images by using the full component imaging system, but also obtain the action differences of the four component images during the imaging process; and the position of the cyclist in each component in the picture is different, It can be seen that the direction of movement of the person is from right to left.

Embodiment 3

[0072] Embodiment 3: Acquisition of imaging parameters, delay time and degradation parameters of the full component imaging system

[0073] 1. Four-component imaging delay relationship and imaging richness judgment

[0074] Such as Figure 8 As shown, it can be seen from the figure that the actions in each component are different, so it can be qualitatively judged that there is indeed a time difference in the imaging of the four components; in the Q component, almost the entire person in the lower right corner of the car can be seen, while in the V component There are only half of them, and there are fewer images of people in the U component, and there is no image of the person in the I component, which not only shows that there is a time difference problem in the imaging of the four components, but also can be concluded that the order of imaging is Q, V, U, I. That is to say, during the shooting process, the Q component is first imaged, then the V component, then the U, and ...

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Abstract

The invention relates to a V-component containing all-component polarized remotely-sensed imaging measurement system and a V-component containing all-component polarized remotely-sensed imaging measurement method, and the system is characterized by comprising a positioning / timing system, an all-component imaging system and a V-component containing all-component polarized image processing system, wherein the positioning / timing system is used for providing space position and time information, and the all-component imaging system can measure four components of Stokes; the imaging system is a camera which can carry out all-component imaging, the positioning / timing system is connected to the inside of a shell of the camera or connected with the camera by a data line, and the image processing system provides the position and attitude of the camera; and a radiometric correction module and a geometric correction module are arranged in the image processing system so as to carry out radiometric correction and geometric correction on images formed by four components of a same surface feature, particularly on images formed by the V component. By using the system and method disclosed by the invention, the measurement on V-component containing all-component polarized remotely-sensed images is realized, and therefore, the system and method disclosed by the invention have a great application value in the aspects of studying subsurface explorations such as surface-feature mineral resource exploration.

Description

technical field [0001] The invention relates to a measurement system and method, in particular to a full-component polarization remote sensing imaging measurement system and method including the V component of the four Stokes components in polarized light. Background technique [0002] In recent years, with the continuous deepening of remote sensing detection research, it is very effective to use polarization remote sensing technology to obtain some special and rich ground object information resources, such as atmospheric detection, target recognition, detection of changes in land resource status, crop growth, and pest and disease forecasting. , Disaster climate change and trend analysis and other fields, it has obvious advantages and can carry out more accurate detection and analysis. At present, both at home and abroad attach great importance to the research of polarization imaging remote sensing technology and its application, among which whether complete and accurate inf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S17/89
Inventor 晏磊陈伟赵海盟李宇波吴太夏孙岩标相云王娟娟杨文剑高付民曲阳
Owner PEKING UNIV
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