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Foggy day image enhancing 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 training time, achieve the effect of improving restoration effect, improving diversity and search efficiency, and balancing global and local search capabilities

Inactive Publication Date: 2015-09-16
CHANGAN UNIV
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  • 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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  • Foggy day image enhancing method based on APSO-BP coupling algorithm
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  • Foggy day image enhancing method based on APSO-BP coupling algorithm

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Embodiment Construction

[0037] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] see figure 1 , a fog image enhancement method based on the APSO-BP coupling algorithm, specifically includes the following steps:

[0039] 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);

[0040] Step 2: Use the APSO-BP algorithm to initialize the algorithm network weights, and obtain a stable algorithm network weight solution;

[0041] a. Particle swarm initialization, initialize the size of the particle swarm, the maximum iteration steps and times, the target error, c1 and c2, r1 and r2, the initial w value, and the initial position and velocity of the initialized particles to determine the state of the particle swarm before training ;

[0042] B. Adopt the APSO algorithm to train the pa...

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Abstract

The invention discloses a foggy day image enhancing method based on an APSO-BP coupling algorithm, which enables the sky area not to show a faulty block effect or a greyish white and, in the visual sense, is much better than the histogram equalization algorithmic result. The APSO-BP coupling algorithm does not need to establish complex imaging physics models and the calculation is simple. In the foggy day image which is restored by the APSO-BP algorithm, the global optimal position and the individual optimal position in the standard PSO algorithm are respectively replaced with the weighted average of the associated individual optimal position by the APSO-BP coupling algorithm. The global and the local searching capabilities of the algorithm are better balanced, and the diversity and the searching efficiency are improved.

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 Applications(China)
IPC IPC(8): G06T5/00
Inventor 王卫星张元方曹霆王峰萍
Owner CHANGAN UNIV