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A Fast Image Reconstruction Method Based on Transmittance Optimization Technology in Fog

A technology of transmittance and atmospheric transmittance, applied in the field of rapid reconstruction of foggy images based on transmittance optimization technology, can solve problems such as obvious, black edges, and affecting the effect of fog penetration

Active Publication Date: 2018-11-30
ANHUI CHAOYUAN INFORMATION TECH
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Problems solved by technology

However, higher downsampling will bring some obvious side effects, for example: at the junction of light and shade in foggy images, high downsampling will cause black edge problems; If problems such as halos appear in the space, the greater the downsampling ratio, the more obvious the side effects, which will seriously affect the effect of fog penetration.

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  • A Fast Image Reconstruction Method Based on Transmittance Optimization Technology in Fog
  • A Fast Image Reconstruction Method Based on Transmittance Optimization Technology in Fog
  • A Fast Image Reconstruction Method Based on Transmittance Optimization Technology in Fog

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Embodiment 1

[0061] This embodiment provides a method for fast reconstruction of foggy images based on transmittance optimization technology, such as figure 1 shown, including the following steps:

[0062] Step S1: Use the camera to obtain the original image I(i,j) of the foggy image to be processed, and calculate the brightness image F(i,j) of the original image, where (i,j)∈Ω, Ω is the image All pixel coordinate sets of ;

[0063] The calculation method of the brightness image F(i,j) of the original image is as follows:

[0064] If the original image is a grayscale image, the grayscale image of the original image is represented as a brightness image F(i,j);

[0065] If the original image is a three-channel color image, the brightness image F(i,j) is constructed using the following brightness conversion model:

[0066]

[0067] In the formula, R(i,j), G(i,j), B(i,j) are the three primary color components of the image, w r is the R channel coefficient, the value is 0.299, w g is th...

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Abstract

The invention discloses a method for rapid image reconstruction in foggy weather based on transmittance optimization technology, which is in the technical field of video image processing in the field of intelligent transportation. The method performs downsampling processing on the original image to obtain a reduced image, and then calculates fog penetration on the reduced image. Processing parameters, while using the reduced transmittance map to restore the original size transmittance, introduce the gray-scale correlation between image pixel neighborhoods, and optimize and improve the accuracy of the upsampling interpolation of the reduced map transmittance. On the one hand, The processing speed is increased, and on the other hand, the fog penetration effect is improved. It overcomes the difficult problems of insufficient transmittance upsampling accuracy in traditional methods, resulting in the appearance of black patches and white halos in areas where image brightness suddenly changes, and improves the effectiveness and practicality of video image fog penetration processing methods in haze environments.

Description

technical field [0001] The present invention relates to the technical field of video image processing in the field of intelligent transportation, and in particular to a foggy image rapid reconstruction method based on transmittance optimization technology. Background technique [0002] In recent years, with the acceleration of the industrialization process, the fog and haze weather has gradually increased and frequently appeared in most parts of my country, causing air quality degradation and seriously affecting people's normal life and traffic travel. At the same time, for video images taken in hazy weather, the light intensity received by the optical sensor changes due to the disturbance of the absorption and scattering of light by the turbid transmission medium. In the captured video images, the details of the imaged objects will be blurred, the contrast will be seriously reduced, and the dynamic range of the imaging will be greatly shortened. Therefore, smog weather has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T3/40
CPCG06T2207/10024G06T2207/10016G06T3/4007G06T2207/30236G06T2207/20024G06T5/73
Inventor 王庚中王传根张乾坤邱换春陈岩许如峰
Owner ANHUI CHAOYUAN INFORMATION TECH
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