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Image defogging method, system and device thereof

A technology in images and images, which is applied in the field of image processing, can solve problems such as lack of universal applicability and poor timeliness of mainstream algorithms, and achieve the effects of improving timeliness, reducing calculations and resources, and reducing difficulty

Active Publication Date: 2020-08-07
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, system and device thereof
  • Image defogging method, system and device thereof

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Embodiment Construction

[0050] 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.

[0051] 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.

[0052] 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, which includes the following steps: obtaining the minimum pixel value in an image to be processed to form a dark channel image and the ambient light corresponding to the image to be processed; and dehazing the image according to a dark channel prior algorithm. The dark channel image is calculated to obtain the estimated transmittance; the estimated transmittance is weighted according to the preset weight formula to obtain the weighted transmittance; the Y component of the image to be processed is calculated by guidance filtering to obtain the guidance Filter formula; optimize the weighted transmittance according to the guided filter formula to obtain the optimal transmittance; perform defogging on the image to be processed according to the optimal transmittance and the ambient light to obtain the optimal image. In the technical solution of the present invention, the amount of calculation and resources are reduced while ensuring a good image defogging effect, thereby greatly improving the timeliness of the algorithm and reducing the difficulty of implementing the algorithm.

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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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T7/11
CPCG06T7/11G06T2207/10004G06T5/77
Inventor 廉政
Owner HANGZHOU TUYA INFORMATION TECH CO LTD
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