Polarization image visualization method based on color image fusion

A polarization image and color image technology, applied in the fusion field of polarization image visualization, can solve the problems of low information entropy and low image contrast of color images.

Active Publication Date: 2020-06-16
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, in complex scenes with large overall polarization dynamics, the display of low polarization target detail components, especially for the performance of

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  • Polarization image visualization method based on color image fusion
  • Polarization image visualization method based on color image fusion
  • Polarization image visualization method based on color image fusion

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Embodiment Construction

[0028] Refer to the attached figure 1 The fusion flow chart of Figure 2 to Figure 4 The polarization image fusion of a total of three groups of scenes is taken as an example, and the exemplary implementation manner of the present invention is described in detail. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage. Then the specific implementation steps of the present invention are:

[0029] 1) The polarization image S is composed of the light intensity image I, the polarization degree image DoP and the polarization angle image AoP, and the S at the pixel position (x, y) x,y The amount of polarization is expressed as:

[0030]

[0031] where I x,y Indicates the light intensity of the pixel, DoP x,y Indicates the degree of polarization of the pixel, AoP x,y Pixel polarization angle;

[0032] 2) I in the S image x,y Decomposed into linear polarization components I_Pol x...

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Abstract

The invention discloses a polarization image visualization method based on color image fusion. The method comprises the following steps: firstly, converting a polarization image into a three-channel image of light intensity, polarization degree and polarization angle; secondly, decomposing the image into a polarized light color image and a natural light grayscale image; thirdly, performing image fusion on the two decomposed images, specifically, selecting a proper edge-preserving fusion algorithm according to requirements to fuse light intensity channels of the two images; then, normalizing the fused light intensity and polarization angle channels; and finally, projecting the normalized image to an HSV color space to obtain a final polarized color image with visualization. According to theinvention, highlighting of low-polarization-degree high-frequency detail features in an original image is used as a solution for improving image information amount and readability.

Description

technical field [0001] The invention belongs to the field of polarization image processing, in particular to a fusion method for visualization of polarization images. [0002] technical background [0003] A polarization image is a three-channel image of an intensity image, a polarization degree image, and a polarization angle image about the same target or scene. Image visualization fully considers human visual experience, expressing multi-channel images in the form of color images helps non-professionals quickly understand image features. Image fusion is to process the images of different channels to highlight and strengthen the useful information in the image, which is beneficial to further analysis and understanding of the image and the detection and recognition of the target. [0004] Since the human eye does not have polarization vision sensitivity, the visualization of polarization images requires a special color space and image processing method to make polarization ...

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Application Information

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IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/10024G06T2207/20192G06T2207/20221
Inventor 李清灵尹达一房陈岩李磊
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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