Polarization target three-component decomposition result color visualization method and system
A polarized target, three-component technology, applied in radio wave measurement systems, measurement devices, reflection/re-radiation of radio waves, etc., can solve the problem of unsatisfactory visual effects, unfavorable analysis and understanding, and poor readability of polarimetric SAR images and other problems, to achieve the effect of rapid improvement of visual effects
Pending Publication Date: 2021-03-26
NAT SPACE SCI CENT CAS +1
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The traditional visualization method for the decomposition results of polarimetric SAR targets is to display the decomposition results in the form of grayscale images for visual interpretation. The polarimetric SAR images formed in this way have poor readability and unsatisfactory visual effects, which is not conducive to the later stage. analysis and understanding
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[0046]The technical solutions of the present invention will now be further described with reference to the drawings.
[0047]referencefigure 1 , Embodiment 1 of the present invention proposes a color visualization method for polarized target three-component decomposition results, including the following steps:
[0048]Step 1) Read the full-polar synthetic aperture radar data to obtain the target coherent matrix [T];
[0049]Step 2) Freeman-Durden three-component decomposition is performed on the target coherent matrix [T] to obtain three power components: surface scatter power component Ps, Two-sided angle scattered power component PdAnd body scattering component Pv;
[0050]Step 3) Three power components Ps, PdPvMake normalization;
[0051]Step 4) Calculate total scattering power span;
[0052]Step 5) Fast median iterative normalization processing is obtained by the total scattering power SPan to obtain span ';
[0053]Step 6) Select the color model and the corresponding color channel mapping scheme an...
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The invention discloses a polarization target three-component decomposition result color visualization method and system, and the method comprises the steps: reading in complete polarization syntheticaperture radar data, and obtaining a target coherence matrix [T]; carrying out Freeman-Durden three-component decomposition on the target coherence matrix [T] to obtain three power components: a surface scattering power component Ps, a dihedral angle scattering power component Pd and a volume scattering component Pv; normalizing the three power components Ps, Pd and Pv; calculating the total scattering power Span; performing fast median iterative normalization processing on the total scattering power Span to obtain Span'; and selecting a color model and a corresponding color channel mapping scheme according to requirements, and displaying the pseudo-color composite image. According to the method, the color visualization effect of the three-component decomposition result of the polarization target of the fully-polarized synthetic aperture radar data can be effectively enhanced, the readability of the image is improved, and the detection, recognition and classification of the target arepromoted.
Description
Technical field[0001]The present invention relates to the field of visualization of polarized target decomposition results, and in particular, to a polarized target three-component decomposition result color visualization method and system.Background technique[0002]In the analysis of Polarotric Synthetic Aperture Radar, POLSAR, the model-based polar target non-coherent decomposition is an effective and popular tool, which is an important part of the target decomposition theory, which has physical interpretation. Clearly, it is easy to achieve convenient and easy visual interpretation. The method is intended to represent the measured multi-view polarization SAR data as a combination of different scattering mechanism models, and each model describes an actual physical scattering process. In 1998, Freeman and Durden were first proposed in the three-component target decomposition method, which created a primary river based on model-based polar target (A.freeman, SLDURDEN.A Three-Compone...
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Login to View More IPC IPC(8): G01S7/04G01S13/90G01S7/02
CPCG01S7/046G01S13/9021G01S7/024Y02A90/10
Inventor 王勋李东张云华刘博杨杰芳陈洪彦
Owner NAT SPACE SCI CENT CAS