Patent
Video image defogging method based on self-adapting allowance
TLDR
In this paper, a video image defogging method based on self-adapting allowance is proposed for outdoor monitoring, remote sensing, intelligent transportation and other aspects, which is applicable to video images with basically unchanged scenes.Abstract:
The invention relates to a video image defogging method based on self-adapting allowance and belongs to the field of video image processing. The method includes: building a single-frame image foggy day degradation model, estimating a rough transmission picture by aid of dark channel prior, obtaining a refined transmission by aid of a guide filter, judging whether images contain a large bright area, obtaining the rectified transmission picture and restoring a fog-free image. The method is applicable to video images with basically unchanged scenes like vide monitoring and video images with dynamically changing scenes, and can be widely applied to outdoor monitoring, remote sensing, intelligent transportation and other aspects.read more
Citations
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Patent
Method and image processing apparatus for image visibility restoration
TL;DR: In this article, a method and image processing apparatus for image visibility restoration are provided, which includes the following steps: receiving an input hazy image including input pixels, obtaining edge information of each of the input pixels according to a median filtering operation and a dark channel, determining a transmission map according to each of input pixels and atmospheric light associated with the image in each color channel.
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Dehazing photos and videos using visual artifact suppression
TL;DR: In this article, a transmission map representing an amount of unscattered light reflected from objects in an input image is estimated and a radiance gradient is determined for the input image to prevent error enhancement.
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Video defogging method and system
Yuan Yilei,Zheng Xianbin,Yu Yi +2 more
TL;DR: In this paper, a video defogging method was proposed for the pre-treatment of foggy video in the applications of video surveillance and the like, which can be used for subsequent video analysis and manually watching the defogged videos.
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Method and device for recognizing human face in fog day image
Liu Zhongxuan,He Xiaobo +1 more
TL;DR: In this paper, a method and a device for recognizing a human face in a fog day image is presented, which comprises a first step of processing an input color image by utilizing a dark channel priority defogging method and regarding the processed image as a first image, a second step of detecting the human face detection in the first image by using a preset human face detector, and a third step of recognizing human face image by adopting an algorithm which combines principal component analysis and linear identification analysis to output the recognizing result.
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Water surface moving platform visual system image analyzing and processing method
Ma Zhongli,Wen Jie,Liu Hongda +2 more
TL;DR: In this article, a water surface moving platform visual system image analyzing and processing method has been proposed, which includes the steps of image fog removal, graying, image stabilizing, target segmenting, binaryzation, shape characteristic extracting, texture characteristic extracting and establishing of target characteristic bases of different types.
References
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Book ChapterDOI
Guided image filtering
Kaiming He,Jian Sun,Xiaoou Tang +2 more
TL;DR: The guided filter is demonstrated that it is both effective and efficient in a great variety of computer vision and computer graphics applications including noise reduction, detail smoothing/enhancement, HDR compression, image matting/feathering, haze removal, and joint upsampling.
Patent
Processing method for camera image and apparatus thereof
TL;DR: In this article, an image that is actually shot by a camera, an imaging value of an atmospheric environment is obtained by an analysis as well as a certain imaging proportion coefficient is calculated, so that an influence caused by the atmospheric environment in the image that was actually shot can be removed; that is, an darkening aspect is removed, therefore, an image similar to a real scene image can be presented and the color expressive force is strong.