A Polarization Image Visualization Method Based on Color Image Fusion
A polarization image and color image technology, which is 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: 2022-07-29
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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However, in complex scenes with large overall polarization dynamics, the display of low polarization target detail components, especially for the performance of natural target edges such as clouds and water surfaces, the image contrast is low
The objective performance is that the information entropy of color images is low
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[0027] Refer to the appendix below figure 1 The fusion flow chart of Figure 2 to Figure 4 An exemplary embodiment of the present invention will be described in detail by taking the polarization image fusion of three groups of scenes as an example. The description of the exemplary embodiments is for exemplary purposes only and is in no way limiting of the invention and its application or usage. Then the specific implementation steps of the present invention are:
[0028] 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:
[0029]
[0030] where I x,y Indicates the light intensity of the pixel, DoP x,y Indicates the pixel polarization degree, AoP x,y Pixel polarization angle;
[0031] 2) I in the S image x,y Decomposed into linearly polarized components I_Pol x,y and the natural light comp...
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The invention discloses a polarization image visualization method based on color image fusion. First, the polarization image is converted into a three-channel image of light intensity, polarization degree and polarization angle; secondly, the image is decomposed into a polarization color image and a natural light grayscale image; Thirdly, image fusion is performed on the two decomposed images. Specifically, an appropriate edge-preserving fusion algorithm is selected to fuse the light intensity channels of the two images according to the requirements; then, the fused light intensity and polarization angle channels are normalized. ; Finally, the normalized image is projected into the HSV color space to obtain the final polarized color image with visualization. The present invention will highlight the high-frequency detail features of low polarization degree in the original image as a solution to improve the information content and readability of the image.
Description
technical field [0001] The invention belongs to the field of polarization image processing, in particular to a fusion method of polarization image visualization. technical background [0002] The polarization image is a three-channel image of the intensity image, polarization degree image, and polarization angle image of the same target or scene. Image visualization is to fully consider human visual perception, expressing multi-channel images in the form of color images, which helps non-professionals to 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 conducive to the further analysis and understanding of the image and the detection and recognition of the target. [0003] Since the human eye does not have the sensitivity of polarization vision, the visualization of polarization images requires special color space and image processing methods to make the po...
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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