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Single-image defogging method based on extreme scattering channel

A technology of scattering channel and dark channel images, applied in the field of single image dehazing based on extreme scattering channel, can solve the problem of unsatisfactory dehazing effect, and achieve the effect of not easy color distortion, good effect, and natural and real dehazing color.

Pending Publication Date: 2020-08-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a single image defogging method based on extreme scattering channels to solve the problem of unsatisfactory defogging effect in the prior art

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  • Single-image defogging method based on extreme scattering channel
  • Single-image defogging method based on extreme scattering channel
  • Single-image defogging method based on extreme scattering channel

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Embodiment Construction

[0062] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise.

[0063] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0064] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and apparatus should be considered part of the specification.

[0065] In all examples shown and discussed herein, any specific values ​​should be construed as illustrative only and not limiting. Accordingly, other instances of the exemplary embodiment may hav...

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Abstract

The invention discloses a single-image defogging method based on an extreme scattering channel, and relates to the field of image processing, and the defogging method comprises the steps: obtaining anoriginal foggy image; constructing a foggy day imaging physical model; dark channel prior; performing bright channel prior; complementing a bright channel prior result and a dark channel prior resultto form an extreme channel, and performing extreme channel scattering analysis; estimating the transmittance; estimating atmospheric light; and calculating to obtain a final defogged clear image according to the transmissivity, atmospheric light and foggy day imaging physical model given by the extreme channel prior. According to the invention, a brand-new prior hypothesis of extreme channel prior is provided to estimate transmissivity and atmospheric light; according to the defogging method, correct defogging can be conducted on areas such as sky or white objects, the effect is good, the accuracy is higher, the defogging effect on dense fog is remarkable, color distortion is not likely to be caused, the final defogging color is natural and real, and the definition is high.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a single image dehazing method based on extreme scattering channels. Background technique [0002] With the continuous progress of society and the rapid development of science and technology, computer vision systems have been widely used in urban transportation, video surveillance, intelligent navigation, remote sensing imaging, military reconnaissance and many other fields; however, in recent years, the frequent occurrence of haze weather, It seriously affects the imaging quality of the computer vision system, resulting in a decrease in contrast, color distortion, and blurring of the acquired images, which has a great impact on people's production and life. Smog is a common natural phenomenon, which is produced by the action of a large number of tiny water droplets, aerosols and other particles suspended in the atmosphere. Due to the absorption, scattering and refraction of ligh...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/40
CPCG06T5/40G06T2207/10004G06T5/94G06T5/73Y02A90/10
Inventor 高昆豆泽阳张宇桐王俊伟胡梓博张晓典张震洲吴穹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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