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Image defogging method and device

An image and pixel technology, applied in the field of image defogging methods and devices, can solve the problems of unclear images, distorted processing effects, halos, etc., and achieve the effects of high definition, good refinement, and solving image distortion.

Active Publication Date: 2016-10-12
CHINA AGRI UNIV
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Problems solved by technology

[0004] Distortion, halo and other phenomena appear in the processing effect of the above-mentioned defogging method, resulting in unclear images

Method used

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  • Image defogging method and device
  • Image defogging method and device

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0055] figure 1It is a schematic flowchart of an image defogging method provided by an embodiment of the present invention.

[0056] like figure 1 As shown, a kind of image defogging method of the present embodiment comprises:

[0057] S11. Acquire the image to be defogged;

[0058] S12. Obtain atmospheric light values ​​according to the image to be defogged;

[0059] S13. Acquire the R channel matrix of the image to be defogged, and acquire the R channel ...

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Abstract

The invention provides an image defogging method and device. The method comprises the steps that a to-be-defogged image is acquired; according to the to-be-defogged image, an atmospheric light value is acquired; the R channel matrix of the to-be-defogged image and the R channel frequency-domain matrix of the R channel matrix of the to-be-defogged image are acquired; the row position of each pixel in the R channel frequency-domain matrix and the column position of each pixel in the R channel frequency-domain matrix are acquired; according to the parameters, a weighted average filter formed by weighting a Gaussian filter, a Gaussian high-pass filter and a Gaussian band-stop filter is acquired; the R channel frequency-domain matrix and the weighted average filter are convoluted, and a convolution result is converted into a spatial domain to acquire a transmittance map; and the defogged image of the to-be-defogged image is acquired according to the atmospheric light value and the transmittance map. According to the invention, the R channel frequency-domain matrix and the weighted average filter are convoluted, so that the defogged image has high definition.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image defogging method and device. Background technique [0002] Haze is a natural phenomenon. The aerosol system composed of a large number of tiny water droplets or ice crystals suspended in the air near the ground is called fog. The particles in the air such as dust, sulfuric acid, nitric acid, and organic hydrocarbons that can make the atmosphere cloudy are called fog. For haze. The existence of smog reduces the visibility of the environment, deteriorates the air quality, and causes serious harm; it also makes the image blurred, which has a certain hindering effect on the application of video-based automatic navigation, monitoring, tracking and other technologies. Therefore, it is of great significance to use image processing and computer vision technology to dehaze the image and make it clear. [0003] The existing image defogging methods include two ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/73
Inventor 李振波李晨郭传鑫杜攀段作栋
Owner CHINA AGRI UNIV
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