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A Defogging Method for Driving Monitoring Image

A technology in images and images, applied in image enhancement, image data processing, instruments, etc.

Active Publication Date: 2021-12-21
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for defogging driving monitoring images, which can be used for high-efficiency and real-time clear processing of images within the key safety range in the fields of driving, navigation, etc., to solve high-speed dynamic processes Problems with real-time image restoration in China

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  • A Defogging Method for Driving Monitoring Image
  • A Defogging Method for Driving Monitoring Image
  • A Defogging Method for Driving Monitoring Image

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Embodiment Construction

[0062] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0063] Such as figure 1 As shown, a driving monitoring image defogging method includes the following steps:

[0064] Step 1. First, perform denoising processing on the image signal A1 collected by the camera while driving, and obtain the image signal A2, and eliminate sudden noises everywhere in the image signal A1;

[0065] The formula for image signal denoising is specifically:

[0066] A2(x,y)=A1(x,y)-A1(x,y)(n(x,y)+A1(x,y)n(x,y)) (1);

[0067] In formula (1), in the time-domain image, the point (1, 1) is taken as the origin, the horizontal to the right is the positive direction of the x-axis, and the vertical downward is the positive direction of the y-axis to establish a two-dimensional image coordinate system, (x, y) are respectively the horizontal and vertical coordinates in the two-dimensional image coordinate system, and n(x, y) is...

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Abstract

The invention discloses a method for defogging a driving monitoring image. According to different occasions of use and realization costs, two carrier signals with different functions are designed, and the target signal and carrier signal are classified differently in different ranges of use, and then modulated Demodulation technology makes the target signal appear more clearly, while the carrier signal can disappear. The present invention adopts different algorithms for processing the scenery within the range of K meters (generally 200 meters) and beyond the range of K meters, so that the surrounding objects can still be seen clearly within the safe range when driving at high speed in foggy weather . The present invention filters the scenes within the safe range first, and then performs the denoising operation, and after processing, we will find that the nearby scenes will be very clear. For scenes outside the safe range, denoise and then perform filtering operations to obtain extremely clear images within the safe range, and peripheral images that are not very useful can be discarded or blurred.

Description

technical field [0001] The invention belongs to the technical field of image defogging, and relates to an image defogging method for vehicle-mounted, ship-borne and other video monitoring equipment, in particular to a driving monitoring image defogging method. Background technique [0002] At present, due to the impact of human beings on nature, there are more and more foggy weather, which is more and more serious, which has a serious impact on automobile traffic, navigation and other fields, and the number of traffic accidents has greatly increased. How to avoid the video surveillance system The influence of fog is a very difficult problem, and it is urgent to use electronic equipment to eliminate the influence of fog. At present, many methods have been adopted to remove the influence of weather factors on surveillance images and increase the clarity of images. The typical method is the method based on the physical model, which uses the atmospheric scattering model to rest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/10
CPCG06T5/10G06T5/70
Inventor 杨延西赵梦韩叔桓田瑞明
Owner XIAN UNIV OF TECH