Unlock instant, AI-driven research and patent intelligence for your innovation.

Defogging method and system based on edge-preserving filtering and smoothing filtering fusion, and storage medium

A technology of edge-preserving filtering and smoothing filtering, which is applied in image data processing, instruments, calculations, etc., can solve the problems of white object color distortion and unclear boundaries, achieve the effect of smooth details, clear object boundaries, and improve computing efficiency

Pending Publication Date: 2022-02-11
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a defogging method, system and storage medium based on the fusion of edge-preserving filtering and smoothing filtering, which are used to solve the problem that the existing image defogging method easily leads to color distortion or unclear boundaries of white objects in the image after defogging the image technical issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Defogging method and system based on edge-preserving filtering and smoothing filtering fusion, and storage medium
  • Defogging method and system based on edge-preserving filtering and smoothing filtering fusion, and storage medium
  • Defogging method and system based on edge-preserving filtering and smoothing filtering fusion, and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Such as Figure 8 As shown, this implementation discloses a method for defogging based on the fusion of edge-preserving filtering and smoothing filtering, including the following steps:

[0077] Construct the dark channel image of the foggy image, and extract the atmospheric light of the foggy image from the dark channel image;

[0078] Perform edge-preserving filter processing on the dark channel image to obtain a first filtered image with clear edges; perform smoothing filter processing on the dark channel image to obtain a second filtered image with smooth internal white objects; perform the first filtered image and the second filtered image Fusion, and extract the atmospheric light curtain of the foggy image from the fusion image generated after fusion;

[0079] Based on the atmospheric light and atmospheric light curtain of the foggy image, the foggy image is dehazed.

[0080] Edge-preserving filter of the present invention can adopt any one in anisotropic diffus...

Embodiment 2

[0085] Embodiment 2 is a preferred embodiment of Embodiment 1, and its difference from Embodiment 1 is that the specific steps of the defogging method based on edge-preserving filtering and smoothing filter fusion are refined:

[0086] In the field of computer vision and computer graphics, the physical model of atmospheric scattering is widely used in the research of image dehazing based on image restoration. The model can be described as follows:

[0087] I(x,y)=J(x,y)t(x,y)+A[1-t(x,y)] (1)

[0088] t(x,y)=e -βa(x，y) #(2)

[0089]Where I(x, y) is the foggy image collected by the imaging system, J(x, y) is the fog-free image, A is the atmospheric light, t(x, y) is the transmittance, β is the atmospheric scattering coefficient, d (x, y) is the scene depth from the imaging system to the pixel (x, y) position. The process of image defogging is the process of restoring the haze-free image J from the foggy image I. However, it is impossible to solve the fog-free image J only by...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a defogging method and system based on edge-preserving filtering and smoothing filtering fusion, and a storage medium. The method comprises the following steps: extracting atmospheric light of a foggy image from the foggy image; constructing a dark channel image of the foggy image, and performing edge-preserving filtering processing on the dark channel image to obtain a first filtered image with clear edges; performing smooth filtering processing on the dark channel image to obtain a second filtering image with a smooth internal white object; fusing the first filtering image and the second filtering image, and extracting an atmospheric light curtain of a foggy image from a fused image generated after fusion; and carrying out defogging processing on the foggy image based on the atmospheric light and the atmospheric light curtain of the foggy image. According to the invention, the dark channel image is fused after being subjected to edge-preserving filtering processing and smooth filtering processing, then the atmospheric light curtain is extracted from the fused image, and the foggy image is subjected to defogging processing, so that it can be ensured that a white object in the defogged foggy image is not distorted, and the boundary of the object in the image is clear.

Description

technical field [0001] The present invention relates to the technical field of image defogging, in particular to a defogging method, system and storage medium based on fusion of edge-preserving filtering and smoothing filtering. Background technique [0002] With the rapid development of industrial technology, the problem of environmental pollution has also been exacerbated, making hazy weather appear more and more frequently. In the foggy environment, the reflected light of the object received by the visual imaging system is absorbed and scattered by the scattering particles in the air. At the same time, it is also affected by the scattering of atmospheric light, which leads to the degradation of the generated image, which will seriously affect the subsequent visual work tasks. [0003] The method of single image defogging can be mainly divided into two categories, the first one is the dehazing algorithm based on image enhancement, because foggy images have the characterist...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/20
CPCG06T5/20G06T2207/10004G06T2207/10024G06T2207/20024G06T5/90G06T5/73
Inventor 唐清善钟海丽肖凯晗李亚捷
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY