Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Image defogging method

An image and image block technology, applied in the field of image processing

Active Publication Date: 2015-12-02
BEIHANG UNIV
View PDF2 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention expects to provide an image defogging method, which can at least solve technical problems such as block effect existing in existing defogging methods

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
  • Image defogging method
  • Image defogging method
  • Image defogging method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In order to solve the technical problems such as the block effect existing in the existing defogging methods, an embodiment of the present invention provides an image defogging method, which is applied to images containing fog, such as figure 2 As shown, the method includes the following steps:

[0050] Step S101: Obtain the dark channel of the image through the color channel of the image;

[0051] The image described in this embodiment refers to an image containing fog obtained by a digital imaging device (such as a mobile phone, a video camera, a digital camera, etc.), and the image is also called a color cast image. The color cast image has low contrast, serious loss of details, and fogging, which brings great difficulties to subsequent image processing and analysis.

[0052] In this embodiment, the image is decomposed by the channel method, and the pixel value of each pixel point of the image on the RGB (Red-red, Green-green, Blue-blue) channel is obtained, and ex...

Embodiment 2

[0093] This embodiment describes the present invention in detail based on an actual scene.

[0094] The present embodiment method comprises the following steps:

[0095] (1) Get the color channel of the image

[0096] Input the foggy images obtained by digital imaging devices such as digital cameras and mobile phone cameras into the computer, and represent the images in the RGB color space;

[0097] The color shift image is obtained by digital imaging equipment (such as digital camera, mobile phone camera, etc.). Under fog and haze conditions, the image quality captured by the optical sensor of digital imaging equipment is seriously degraded, the image contrast is low, the details are seriously lost, and foggy images are generated, which brings great difficulties to subsequent image processing and analysis. Read the fogged image into the computer, and obtain the pixel value of each pixel of the image in the three channels of R, G, and B through channel decomposition, so as t...

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 an image defogging method, which is applied to foggy images. The image defogging method comprises the steps of: acquiring a dark channel of an image through a color channel of the image; acquiring atmospheric light intensity and transmissivity of the image through the dark channel; correcting the color channel according to the transmissivity to obtain a corrected color channel; acquiring corrected atmospheric light intensity and corrected transmissivity through the corrected color channel; and acquiring a defogged image according to the corrected color channel, the corrected atmospheric light intensity and the corrected transmissivity. The image defogging method is used for correcting the color channel of the image, the atmospheric light intensity and the transmissivity, is capable of defogging the image maximally according to features of the image, and eliminates problems such as blocky effect.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to an image defogging method. Background technique [0002] As an important means of security protection, video surveillance plays an extremely important role. However, the video surveillance system is greatly affected by environmental factors when acquiring images. For example, under fog and haze conditions, the quality of the image captured by the optical sensor is severely degraded, the image contrast is low, and the details are seriously lost, which brings great difficulties to the subsequent image processing and analysis. Therefore, efficient and feasible dehazing algorithms are studied. It has very important theoretical and research value. [0003] Domestic and foreign scholars' research on dehazing methods is mainly divided into two categories: the dehazing algorithm based on the atmospheric light scattering model and the dehazing algorithm based on image enhanceme...

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
IPC IPC(8): G06T5/00
Inventor 姜志国董博张浩鹏蔡博文
Owner BEIHANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com