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A Maritime Image Processing Method Based on Global Brightness Adaptive Equalization

An adaptive equalization and image processing technology, applied in image data processing, image enhancement, image analysis and other directions, can solve the problems of inspection and lack of image contrast, and achieve the effect of rich colors, outstanding prospects and good application value

Active Publication Date: 2022-03-11
JIMEI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The algorithm effectively enhances local details and is well-applied in indoor experiments, however, the algorithm was not tested on outdoor images and image contrast was not checked

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  • A Maritime Image Processing Method Based on Global Brightness Adaptive Equalization
  • A Maritime Image Processing Method Based on Global Brightness Adaptive Equalization
  • A Maritime Image Processing Method Based on Global Brightness Adaptive Equalization

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Embodiment Construction

[0036] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, the present invention provides a method for processing images at sea based on global brightness adaptive equalization, comprising the following steps:

[0038] Step S1. Carry out inversion calculation for the sea image obtained by the camera, and obtain the original image A and the inversion image A f ;

[0039] Step S2. Obtain the brightness value of the original image, and adopt global brightness adaptive histogram equalization processing;

[0040] Step S3, using the MSRCR algorithm to calculate the original image A and the inverted image A respectively f The RGB three-channel reflection component of ;

[0041] Step S4, performing linearization processing on the luminance information obtained in step S2 and the RGB three-channel reflection component obtained in step S3, to obtain the reflection comp...

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Abstract

The invention relates to a marine image processing method based on global brightness adaptive equalization. First, calculate the inverse image of the sea fog image; secondly, perform MSRCR operation on the original image and the image after inversion; then, use the global brightness adaptive histogram equalization processing, and compare the processed brightness with the MSRCR processed The reflection component of the low-frequency signal is linearly superimposed; finally, the mean and standard deviation of the superimposed image are calculated, and the gray value of the image is stretched adaptively to improve the color contrast of the image. The invention makes the foreground of the processed image prominent, with clear details and rich colors, and has good application value for defogging sea images.

Description

technical field [0001] The invention relates to a marine image processing method based on global brightness adaptive equalization. Background technique [0002] In real life, due to the scattering of atmospheric particles in foggy days, the image of the sea surface captured by the CCD camera is distorted, such as uneven exposure, low contrast, or blurred details. On the other hand, due to the physical limitations of the CCD sensor , the influence of atmospheric scattering cannot be eliminated mechanically, so it is of great significance to provide an algorithm that effectively eliminates the influence of incident light and improves the quality of marine images. [0003] The purpose of sea fog image enhancement is to eliminate the fog, highlight the foreground information of the image, and reduce the background information. Traditional image enhancement methods include histogram equalization (HE), gamma correction (GC), histogram norm (HS), etc., but these methods can only d...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/40G06T5/00
CPCG06T5/40G06T5/009G06T5/003G06T2207/20008
Inventor 周海峰林昌陈武蔡国榕陈景锋陈清林王佳宋佳声张谅谢祎张兴杰焦健
Owner JIMEI UNIV