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Video frame image defogging method and device

A frame image and video frame technology, which is applied in the field of video frame image defogging, can solve the problems of poor image defogging effect and color shift, and achieve the effect of reducing storage space, reducing computational complexity, and improving defogging effect

Inactive Publication Date: 2019-07-02
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

In the process of defogging, the Y (brightness) U (chroma) V (concentration) domains of the video image are respectively defogged according to the defogging formula, and the image after defogging is more prone to hue shift in the U domain and V domain shift, the image defogging effect is poor

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  • Video frame image defogging method and device
  • Video frame image defogging method and device
  • Video frame image defogging method and device

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Embodiment Construction

[0084] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0085] In the current video image defogging process, the Y, U, and V domains of the video image are respectively defogged according to the defogging formula. poor.

[0086] In view of this, an embodiment of the present invention provides a method for defogging a video frame image. The defogging result of the Y component is mapped to the U component and the V component, so as to ensure that the hues of the Y component, the U component, and the V component are consistent as much as possible.

[0087] The following describes the technical solutions provided by the embodiments of the present invention in conjunction with the drawings in the description.

[0088] See figure 1 , the ...

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Abstract

The invention discloses a video frame image defogging method and device, which are used for eliminating the hue shift phenomenon in a U domain and a V domain after the video frame image is defogged soas to improve the defogging effect. The video frame image defogging method comprises the steps of determining an atmospheric light value and transmissivity of a first frame image; performing defogging processing on the brightness Y component of the current frame image according to the atmospheric light value and the transmissivity to obtain a defogging result of the Y component; wherein the firstframe of image is a previous frame of image of the current frame of image; and performing defogging processing on the chroma U component and the concentration V component of the current frame image according to the defogging result of the Y component to obtain a defogged current frame image.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and device for defogging video frame images. Background technique [0002] Due to the influence of the shooting environment, the clarity of the video image obtained by shooting may be poor. For example, in a foggy environment or the like, the picture clarity of the video image obtained by shooting is poor due to particles in the environment. In order to obtain a clearer image, it is necessary to perform defogging processing on the captured video image. [0003] The currently commonly used defogging methods are based on physical models, such as atmospheric scattering models and dark channel prior models, to adjust the contrast or detail information of video images. In the process of defogging, the Y (brightness) U (chroma) V (concentration) domains of the video image are respectively defogged according to the defogging formula, and the image after defogging is m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10016G06T5/73
Inventor 郑建海郁军军方伟
Owner ZHEJIANG DAHUA TECH CO LTD
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