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A Method of Infrared Polarization and Light Intensity Image Fusion Based on Structural Similarity Constraint

A technology of structural similarity and infrared polarization, applied in image enhancement, image analysis, image data processing, etc., can solve the problems that it is difficult to better preserve the brightness, contour, edge and texture of two types of images, and achieve the loss of low-frequency features , Reduce the loss of high-frequency information, the effect of good edge and texture features

Inactive Publication Date: 2018-09-18
ZHONGBEI UNIV
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Problems solved by technology

[0004] In order to solve the problem that the existing fusion method is difficult to better preserve the brightness, outline, edge and texture of the two types of images, the present invention proposes a new method that completely preserves the characteristics of infrared light intensity images and maximizes the characteristics of infrared polarization images. fusion method

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  • A Method of Infrared Polarization and Light Intensity Image Fusion Based on Structural Similarity Constraint

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Embodiment Construction

[0023] refer to figure 1 flow chart for Figure 4 and Figure 5 The shown infrared polarization and light intensity images are the research object and the experiment is carried out.

[0024] An infrared polarization and light intensity image fusion method using structural similarity constraints, comprising the following steps:

[0025] S1: Use an infrared thermal imager to take images of infrared light intensity, use a step-rotating polarizer and an infrared thermal imager to build an infrared polarization camera, and obtain four angles of 0°, 45°, 90° and 135° by rotating the polarizer Infrared polarized images, when shooting, the camera and the object are at the same level;

[0026] S2: Using the infrared polarization images taken in S1 at four angles of 0°, 45°, 90° and 135°, the infrared polarization degree image is calculated by solving the Stokes equation, that is, the infrared polarization image used for fusion, the formula as follows:

[0027]

[0028]

[00...

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Abstract

The invention provides an infrared polarization and light intensity image fusion method based on structure similarity constraint. The invention discloses the multi-scale infrared polarization and light intensity image fusion method based on structure similarity, which belongs to the field of infrared image fusion. The method comprises the steps that a multi-scale Gaussian filter is used to acquire an infrared polarization low frequency image; images before and after filtering are subtracted to acquire the high frequency characteristic of the infrared polarization image; a structure similarity index is added to evaluate the similarity between a low frequency image and the original infrared polarization image when decomposing is carried out; when the similarity is lower than a threshold, infrared polarization high frequency characteristic extraction is completed to stop decomposing; edge, texture and other characteristics of the infrared polarization image are extracted to the greatest extent; high-frequency information loss is minimized; the high frequency characteristic image of the decomposed infrared polarization image is superimposed on the infrared light intensity image. The high frequency characteristic image of the decomposed infrared polarized image is superimposed on the infrared intensity image. According to the method, the problem that too many characteristics, such as brightness, contour, edge, texture and the like, are lost in fusion of the existing method; the characteristics of the infrared light intensity image and the characteristics of the infrared polarization image can be completely preserved; and the method is simple and effective.

Description

technical field [0001] The invention belongs to the field of infrared image fusion, especially a method for solving the problem that current infrared polarization and light intensity image fusion methods tend to lose too many features such as brightness, contour, edge and texture of two types of images, specifically a method based on structural similarity A Constrained Infrared Polarization and Intensity Image Fusion Method. Background technique [0002] Infrared light intensity imaging uses the difference in thermal radiation between objects to perform imaging. It can overcome unfavorable environmental factors such as clouds and fog during detection, detect objects that obscure phenology, and has strong environmental adaptability. However, when the temperature difference between objects is small or When the temperature is the same, the difference in thermal radiation between objects decreases or disappears, and the target may not be detected. Infrared polarization imaging ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50
CPCG06T5/50G06T2207/20221
Inventor 杨风暴张雷吉琳娜王建萍郭喆吕胜
Owner ZHONGBEI UNIV
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