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Image fusion method and device

An image fusion and fusion algorithm technology, applied in the field of image processing, which can solve the problems of unreal images and inability to display image details clearly.

Active Publication Date: 2017-05-31
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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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 comprises the steps as follows: an acquired visible light image and an acquired infrared image are partitioned into multiple hierarchies with the same partitioning method; whether the difference between values of corresponding parameters in low-frequency components of the visible light image and the infrared image are larger than set thresholds is judged, if yes, the values of the parameters in the low-frequency components of the visible light image serve as values of the corresponding parameters in the low-frequency components after fusion; if no, values of the corresponding parameters in the low-frequency components after fusion are determined according to a preset low-frequency fusion algorithm; the high-frequency component of each hierarchy after fusion is determined according to a preset high-frequency fusion algorithm; the low-frequency components after fusion and the high-frequency components of all hierarchies after fusion are reconstructed, and a fused image is obtained. The image fusion method and device are used for solving the problems that details of images cannot be displayed clearly and reflected images are untruthful when the brightness is enhanced abnormally in infrared images in the prior art.

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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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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