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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, applied in the field of measurement systems, can solve the problems of synchronous acquisition, research, and inability to apply incomplete component images.

Active Publication Date: 2012-07-18
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

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Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0058] 1. Under ideal light source illumination conditions in the laboratory:

[0059] 1) Irradiate the surface of the rock sample with non-polarized light and linearly polarized light with different irradiation angles, and use the polarization parameter measuring 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 performance. Repeatability, and continuously optimize the calculation model, reduce transmission errors and eliminate modulation errors through calculations in the experiment, so that the V component polarization image is very close to the actual characteristics of the ground object;

[0060] 2) Take the normal line of the reflecting surface of the irradiated light (rock surface) as the axi...

Embodiment 2

[0070] Embodiment 2: Obtain moving image feature parameters from a set of I, Q, U, and V four-component images

[0071] Such as Picture 9 As shown (the upper left corner is the I component imaging map, the upper right corner is the Q component imaging map, the lower left corner is the U component imaging map, and the lower right corner is the V component imaging map), you can see the existing position changes of the moving target from the four component maps , And behavior changes. By decomposing them in vector, the result of analyzing the characteristics of the moving image using the full-component imaging system is obtained, and the motion difference of the four component images in the imaging process is obtained; the position of the cyclist in each component in the figure 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 a full-component imaging system

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

[0074] Such as Figure 8 As shown, it can be seen from the figure that the action in each component is different, so it can be qualitatively judged that the four components are indeed time lag when imaging; in the Q component, you can almost see the entire character in the lower right corner of the car, while in the V component There are only half of them, and there are fewer people in the U component or even no people in the I component. This indicates that the four component imaging has a time difference problem, and it can be concluded that the imaging sequence is Q, V, U, I. That is to say, in the process of shooting, first the Q component is imaged first, then the V component, then U, and finally the I component.

[0075] 2. The imaging delay characteristic para...

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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 Stokes four components in polarized light. Background technique [0002] In recent years, with the continuous in-depth research on remote sensing detection, the use of polarization remote sensing technology to obtain some special and rich ground information resources is very effective, such as atmospheric detection, target recognition, land resource status change detection, crop growth and pest forecast , Disaster climate change and trend analysis have obvious advantages, enabling more precise detection and analysis. At present, much attention is paid to the research of polarization imaging remote sensing technology and its application at home and abroad. Among them, whether complete and accurate information can be obtained in polarization detection is very important. ...

Claims

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Application Information

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Patent Type & Authority Applications(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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