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A Foggy Image Enhancement Method Based on Apso-BP Coupling Algorithm

An APSO-BP, image enhancement technology, applied in the field of image processing, can solve problems such as shortening the training time, and achieve the effect of improving the restoration effect, improving the diversity and search efficiency, and improving the visual effect.

Inactive Publication Date: 2019-04-05
CHANGAN UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a fog image enhancement method based on the APSO-BP coupling algorithm. Can shorten the training time, and can effectively avoid the occurrence of local minimum defects

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  • A Foggy Image Enhancement Method Based on Apso-BP Coupling Algorithm
  • A Foggy Image Enhancement Method Based on Apso-BP Coupling Algorithm
  • A Foggy Image Enhancement Method Based on Apso-BP Coupling Algorithm

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Embodiment Construction

[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] see figure 1 , a fog image enhancement method based on the APSO-BP coupling algorithm, specifically includes the following steps:

[0036] Step 1. Using the dark channel method or the Retinex image enhancement method to perform data preprocessing on the blurred image g(x, y) to obtain a sample image f(x, y);

[0037] Step 2. Use the APSO-BP algorithm to initialize the algorithm network weights. After continuously comparing the pixel attributes of the blurred image g(x, y) and the preprocessed sample image f(x, y), the pixel attributes are gray Degree value or RGB channel value, and then get a stable algorithm network weight solution;

[0038] a. Particle swarm initialization, initialize the size of the particle population, the maximum iteration steps and times, the target error, c 1 and c 2 、r 1 and r 2 ,...

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Abstract

The invention proposes a foggy image enhancement method based on the APSO-BP coupling algorithm, which can prevent bad block effect and gray effect in the sky area, and is visually superior to the result of the histogram equalization algorithm. The algorithm does not need to establish a complex imaging physical model, and the calculation is simple; and in the foggy image restored by the algorithm, the algorithm used replaces the global optimal position and individual optimal position in the standard PSO algorithm with the relevant individual optimal position The weighted average of the algorithm better balances the global and local search capabilities of the algorithm, and improves the diversity and search efficiency of the algorithm.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a fog image enhancement method based on an APSO-BP coupling algorithm. Background technique [0002] In a wide range of outdoor image processing applications, the influence of severe weather such as fog and haze is often encountered. In foggy days, low visibility is the most prominent feature in the atmosphere. The scene is shrouded in smog in the atmosphere. At this time, use a camera or video camera The obtained image must be not clear enough due to the interference of the blurred environment of the depth of field, and many features contained in the image are covered or blurred, which cannot meet the needs of people's visual applications. Therefore, it is of great practical significance and importance to study the restoration of foggy blurred images Value. [0003] The visual effect of images taken in foggy days is poor, mainly due to the scattering effect of atmosphe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 王卫星张元方曹霆王峰萍
Owner CHANGAN UNIV