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Image defogging method, image defogging system and equipment

A technology in images and images, applied in the field of image processing, can solve the problems of poor timeliness and lack of universal applicability of mainstream algorithms, and achieve the effects of improving timeliness, reducing computational complexity and resources, and achieving universal applicability.

Active Publication Date: 2020-05-08
HANGZHOU TUYA INFORMATION TECH CO LTD
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Problems solved by technology

[0006] For this reason, the object of the present invention is to provide a kind of image defogging method based on dark channel image and its system, computer-readable storage medium and computer equipment, it can solve the poor timeliness and do not have universal applicability on the existing mainstream algorithm The problem

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  • Image defogging method, image defogging system and equipment
  • Image defogging method, image defogging system and equipment
  • Image defogging method, image defogging system and equipment

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[0049] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0050] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the protection scope of the present invention is not limited to the specific details disclosed below. EXAMPLE LIMITATIONS.

[0051] Refer below Figure 1 to Figure 4 The dark channel image-based image defogging method and system, computer-readable storage medium and computer equipment involved in the embodiments of the present...

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Abstract

The invention relates to an image defogging method based on a dark channel image. The method comprises the following steps: obtaining a minimum pixel value in a to-be-processed image to form a dark channel image and ambient light corresponding to the to-be-processed image; calculating the dark channel image according to a dark channel prior algorithm to obtain estimated transmissivity; performingweighted calculation on the estimated transmissivity according to a preset weight formula to obtain weighted transmissivity; performing guided filtering calculation on the Y component of the to-be-processed image to obtain a guided filtering formula; optimizing the weighted transmissivity according to the guide filtering formula to obtain an optimal transmissivity; and performing defogging processing on the to-be-processed image according to the optimal transmissivity and the ambient light to obtain an optimal image. On the premise that a good image defogging effect is obtained, the calculation amount and resources are reduced, so that the timeliness of the algorithm is greatly improved, and meanwhile, the algorithm landing difficulty is reduced.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image defogging method based on a dark channel image and its system, a computer-readable storage medium and a computer device. Background technique [0002] The current image defogging algorithm is mainly divided into two directions. One is to use image enhancement methods to improve image contrast to achieve the effect of defogging. The other is to restore the optical path by establishing a physical imaging model, and then reverse the model to remove the fog. . Dehazing based on image enhancement mainly uses methods such as contrast enhancement or histogram equalization to achieve the purpose of defogging. This method is simple and easy to implement, but the effect is poor, and contrast enhancement may introduce other problems such as noise; and if Establish a reasonable physical imaging model to analyze the changes in the optical path and factors that affec...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/11
CPCG06T7/11G06T2207/10004G06T5/77
Inventor 廉政
Owner HANGZHOU TUYA INFORMATION TECH CO LTD
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