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An image fusion method and device

A technology of image fusion and fusion algorithm, which is applied in the field of image processing, can solve the problems of unreal images and unclear display of image details

Active Publication Date: 2020-10-02
ZHEJIANG DAHUA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an image fusion method and device, which are used to solve the problem in the prior art that the details of the image cannot be clearly displayed, and the image reflected when the brightness in the infrared image becomes abnormally high is not real.

Method used

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  • An image fusion method and device

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Experimental program
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Embodiment 1

[0066] figure 1 A schematic diagram of an image fusion process provided by an embodiment of the present invention, the process includes:

[0067] S101: Using the same division method, divide the acquired visible light image and infrared image into multiple levels, acquire the low frequency components of the visible light image and infrared image, and the high frequency components corresponding to each level, wherein the low frequency components contain at least A parameter, the high-frequency component includes at least one parameter.

[0068] The image fusion method provided by the embodiment of the present invention is applied to an electronic device, and the electronic device may be an image acquisition device, such as a video camera, a camera, etc., or may be a mobile phone, a personal computer (PC), a tablet computer, or the like.

[0069] The methods for image division include: region segmentation method, histogram method and pyramid transformation method, etc. Taking ...

Embodiment 2

[0084] In order to eliminate the noise in the visible light image and make the infrared information more prominent in the fused image, thereby improving the clarity of the fused image, on the basis of the above-mentioned embodiments, in the embodiment of the present invention, the acquisition After the visible light image and the infrared image correspond to the high-frequency components of each level, before determining the fused high-frequency components of each level, the method further includes:

[0085] performing mapping processing and median filtering on the high-frequency components corresponding to each level of the visible light image; and / or,

[0086] Amplify the high-frequency components corresponding to each level of the infrared image.

[0087] Specifically, the mapping rule can be set according to the value of each parameter in the high-frequency component of each level of the visible light image, for example: if the value of the parameter is in the range greate...

Embodiment 3

[0091] In the process of image acquisition, in the case of low illumination, there will be a lot of noise in the visible light image, and after the visible light image is divided, the noise is mainly manifested in the high frequency component of visible light. In order to improve the clarity of the fused image, In the embodiment of the present invention, the mapping processing of the high-frequency components corresponding to each level of the visible light image includes:

[0092] For the value of each parameter in the high-frequency component corresponding to each level of the visible light image, determine whether the absolute value of the value of the parameter is smaller than the first parameter threshold;

[0093] If yes, update the value of this parameter to zero;

[0094] If not, determine whether the absolute value of the parameter is smaller than a second parameter threshold, and if so, update the parameter value according to a preset parameter adjustment coefficient...

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Abstract

The invention discloses an image fusion method and device. The method includes: using the same division method to divide the acquired visible light image and infrared image into multiple levels; for the parameters in the low frequency components of the visible light image and infrared image , judging whether the difference of the value of the parameter is greater than the set threshold, if yes, using the value of the parameter in the low frequency component of the visible light image as the value of the parameter in the fused low frequency component; if not, according to the preset low frequency The fusion algorithm determines the value of the parameters in the fused low frequency component; according to the preset high frequency fusion algorithm, determines the fused high frequency component of each level; combines the determined fused low frequency component with the fused The high-frequency components of each level are reconstructed to obtain a fused image. It is used to solve the problem in the prior art that the details of the image cannot be clearly displayed, and the image reflected when the brightness in the infrared image becomes abnormally high is unreal.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image fusion method and device. Background technique [0002] With the rapid development of science and technology and the wide application of computer vision technology, video acquisition equipment is widely used in aerial photography, environmental monitoring, security monitoring and other aspects. However, affected by factors such as geographical topography and meteorological conditions, visible light images collected under poor illumination conditions may have blurred problems, while infrared images cannot clearly reflect the reflection of infrared light due to the material and color of the object. Real scenes, and image fusion technology can effectively integrate the advantages of visible light images and infrared images, and clearly display images. [0003] However, in the prior art, only the visible light image and the infrared image are simply fused, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/50G06T2207/20016G06T5/73G06T5/10G06T2207/10024G06T2207/10048G06T2207/20064G06T2207/20221G06T5/70G06T7/90G06T11/001G06T2207/10004G06T2207/10016G06T2207/20182
Inventor 张东王松
Owner ZHEJIANG DAHUA TECH CO LTD
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