Image defogging method and device based on image sky segmentation and storage medium

An image segmentation and image technology, applied in image analysis, image enhancement, image data processing, etc., can solve the problems of blurred border area, image oversaturation, color distortion of sky area, etc., and achieve the effect of improving contrast and reducing distortion

Pending Publication Date: 2021-03-09
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The dark channel priority rule also has application limitations. For example, when the color of the scene is white or close to the color of the sky, the da

Method used

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  • Image defogging method and device based on image sky segmentation and storage medium
  • Image defogging method and device based on image sky segmentation and storage medium
  • Image defogging method and device based on image sky segmentation and storage medium

Examples

Experimental program
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Example Embodiment

[0057] Example one

[0058] Such as figure 1 As shown, the embodiment of the present invention provides an image dencing method based on image sky, including the following steps:

[0059] Step 1: Mixed image pretreatment of the original image containing the sky region obtains a new image, wherein the mixed image pretreatment includes sequentially performing gradient sharpening, a means of oscillating, secondary sharpening, masking, and additive processing. By performing a secondary sharpening and a smooth mixed image pretreatment to retain the details of the image, the distortion of the image is reduced.

[0060] Step 2: The new image is divided into image segmentation processing using an OSTU 值 rate division algorithm, obtaining a sky region image and a non-sky region image;

[0061] For the sky region image and the non-sky region image separately, the devil treatment is performed, and the specifically is as follows:

[0062] Based on the prior art of the non-sky region image, t...

Example Embodiment

[0110] Example 2

[0111] Embodiments of the present invention provide a device including the following modules:

[0112] The image pre-processing module is used to make a mixed image pretreatment of the original image containing the sky region to obtain a new image, the hybrid image pretreatment including gradient sharpening, a means of oscillating, and a second sharpening, masking and phase. Adding treatment;

[0113] The image segmentation module is used to use an OSTU 值 分 分 分 分 处理, 天 天;;;;;;;;;;;;;;;;;;:;:

[0114] The first processing unit is used to derive with the sky region image and the non-sky region image, respectively:

[0115] The second processing unit is configured to obtain a non-sky region image to obtain a non-sky region to remove fog image based on a non-sky region image, a linear tensile treatment of a non-sky region image. , Get the sky region to remove the fog image;

[0116] The image fusion module is used to utilize the binary mask of the sky region and the...

Example Embodiment

[0117] Example three

[0118] Embodiments of the present invention provide a device including a processor and a storage medium, the storage medium for storing instructions;

[0119] The processor is used to operate according to the instruction to perform the steps of the method described in the embodiment.

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Abstract

The invention discloses an image defogging method and device based on image sky segmentation, and a storage medium, and belongs to the technical field of image defogging, and the method comprises thefollowing steps: carrying out the hybrid image preprocessing of an original image containing a sky region, and obtaining a new image, wherein the hybrid image preprocessing comprises gradient sharpening, mean filtering smoothing, secondary sharpening, masking and addition processing in sequence; carrying out image segmentation processing on the new image by adopting an Ostu threshold segmentationalgorithm to obtain a sky region image and a non-sky region image, and respectively carrying out defogging processing on the sky region image and the non-sky region image to obtain a non-sky region defogged image and a sky region defogged image; and fusing the sky area defogged image and the non-sky area defogged image by using the binary mask of the sky area and the binary mask of the non-sky area to obtain a final defogged image. Image details can be effectively kept, the image contrast is improved, and sky area color distortion is eliminated.

Description

technical field [0001] The present invention relates to the technical field of image defogging, in particular to an image defogging method, device and storage medium based on image sky segmentation. Background technique [0002] With the rapid development of industrialization and urbanization, the problem of air pollution has intensified, and haze weather has become more frequent. Smog is produced by the interaction of fine particles emitted by human social activities and static weather. In such a climate environment, outdoor visibility is greatly reduced, and the quality of images captured by outdoor imaging equipment is severely degraded. However, in the information society, image and video information has become the main source of information for people, so image quality problems in haze weather have attracted more and more attention. [0003] In haze weather, there are a lot of turbid media (such as hydrosol, fog, haze, etc.) in the air, and the propagation of light is ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/20G06T7/11G06T7/136
CPCG06T5/003G06T5/20G06T5/009G06T5/002G06T7/11G06T7/136G06T2207/20192
Inventor 张登银孔雷平孙誉焯韩文生齐城慧马永连
Owner NANJING UNIV OF POSTS & TELECOMM
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