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Infrared and weak visible image fusion method based on Cauchy ambiguity function

An infrared image and blur function technology, applied in the field of image processing, can solve the problems of low contrast of fusion images, poor visibility of visible light images, insufficient retention of background details, etc., to achieve outstanding detail information, improve visibility, and good fusion effect. Effect

Active Publication Date: 2018-12-18
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] Aiming at the problems of low contrast of fused images and insufficient background detail retention caused by poor visibility of visible light images under low light conditions, the present invention provides a fusion method of infrared and weak visible light images based on the Cauchy fuzzy function

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  • Infrared and weak visible image fusion method based on Cauchy ambiguity function
  • Infrared and weak visible image fusion method based on Cauchy ambiguity function
  • Infrared and weak visible image fusion method based on Cauchy ambiguity function

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific examples and with reference to the accompanying drawings.

[0048] see figure 1 , an infrared and weak visible light image fusion method based on the Cauchy ambiguity function, the specific implementation steps are as follows:

[0049] Step 1) Enhancement of weak visible light images. Specifically include the following steps:

[0050] Step 1.1) Utilize guided filtering GF r,ε (1) Decompose the weak visible light image I to obtain the base layer of the image and detail layer

[0051]

[0052]

[0053] r is the size of the filter, ε is the degree of edge preservation; log( ) is the natural logarithmic operator, in order to prevent the log value from being negative, ξ≥1.

[0054] Step 1.2) Since the extracted base layer of the image has a high dynamic range, the dynamic rang...

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Abstract

The invention discloses an infrared and weak visible light image fusion method based on a Cauchy ambiguity function, Firstly, the improved guiding filter is used to enhance the visibility of the darkregion of the weak visible light image. Secondly, the infrared image and the enhanced weak visible light image are decomposed by NSST to obtain the low frequency and high frequency components of the infrared image and enhanced weak visible light image. Secondly, a Cauchy membership function is constructed by using an intuitionistic fuzzy set to fuse the low frequency components of infrared image and enhanced weak visible image, and the high frequency components of infrared image and enhanced weak visible image are fused by using an adaptive two-channel pulse emission cortex model. Finally, thefused low-frequency and high-frequency components are reconstructed by non-downsampled shear wave inverse transform, and the final fused image is obtained. The invention can more effectively extractthe detail information of the image and obtain better fusion effect.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an infrared and weak visible light image fusion method based on a Cauchy fuzzy function. Background technique [0002] The method of multi-scale geometric analysis based on wavelet transform has a certain contribution to image fusion, but because the wavelet framework can only construct three direction elements of horizontal, vertical and diagonal, they still have some shortcomings. [0003] On the basis of this theory, K. Guo and G. Easley et al. proposed the shear wave (Shearlet) theory by combining geometry and multi-scale analysis by using synthetic wavelet theory. Although the synthetic wavelet transforms the one-dimensional scale transformation factor in the wavelet into an expansion factor and a shear factor to obtain a two-dimensional space, the synthetic wavelet system obtained through the transformation can construct basic elements in any direction, but the She...

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Application Information

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IPC IPC(8): G06T5/50G06T5/00
CPCG06T5/50G06T2207/20221G06T2207/10048G06T5/92
Inventor 江泽涛何玉婷江婧胡硕
Owner GUILIN UNIV OF ELECTRONIC TECH
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