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Underwater image enhancement method and enhancement device

An underwater image and image technology, which is applied in the field of underwater image enhancement methods and enhancement devices, can solve problems such as color shift effects, and achieve the effects of improving low quality, reducing useful information in saved images, and improving accuracy and efficiency.

Active Publication Date: 2019-08-20
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an underwater image enhancement method and enhancement device to solve the problem of color shift effect in the existing dark channel prior defogging method to restore underwater images

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  • Underwater image enhancement method and enhancement device
  • Underwater image enhancement method and enhancement device
  • Underwater image enhancement method and enhancement device

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Embodiment 1

[0051] Such as figure 1 As shown, the underwater image enhancement method provided by the embodiment of the present invention includes:

[0052] S101, acquiring the original underwater image, and establishing an underwater optical imaging model according to the characteristics of the underwater imaging;

[0053] S102, using the characteristics that the underwater optical imaging model is similar to the atmospheric model, using the dark channel prior defogging algorithm that performs linear programming on the transmittance to perform clear processing on the original underwater image to obtain the first clear image, wherein the Clear processing includes: contrast enhancement;

[0054] S103, using the grayscale world algorithm to perform color correction on the original underwater image to obtain a second clear image;

[0055] S104, using an image fusion algorithm based on wavelet transform to fuse the first clear image and the second clear image to obtain an underwater restora...

Embodiment 2

[0123] The present invention also provides a specific implementation of an underwater image enhancement device. Since the underwater image enhancement device provided by the present invention corresponds to the specific implementation of the aforementioned underwater image enhancement method, the underwater image enhancement device can perform the above-mentioned The purpose of the present invention is achieved through the process steps in the specific implementation of the method, so the explanations in the specific implementation of the above-mentioned underwater image enhancement method are also applicable to the specific implementation of the underwater image enhancement device provided by the present invention. Details will not be described in the following specific implementation manners.

[0124] Such as image 3 As shown, the embodiment of the present invention also provides an underwater image enhancement device

[0125] Build module 11, be used for acquiring underwa...

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Abstract

The invention provides an underwater image enhancement method and an underwater image enhancement device, which can improve the restoration accuracy and efficiency of an underwater image. The method comprises the steps that an underwater original image is acquired, and an underwater optical imaging model is established according to underwater imaging characteristics; a characteristic that an underwater optical imaging model is similar to an atmosphere model is utilized, a dark channel prior defogging algorithm for performing linear programming on transmissivity is utilized to perform clearnessprocessing on an underwater original image to obtain a first clear image, and the clearness processing comprises contrast enhancement; performing color correction on the underwater original image byusing a gray world algorithm to obtain a second clear image; and fusing the first clear image and the second clear image by using an image fusion algorithm based on wavelet transform to obtain an underwater restored image. The invention relates to the technical field of image enhancement and restoration.

Description

technical field [0001] The invention relates to the technical field of image enhancement and restoration, in particular to an underwater image enhancement method and enhancement device. Background technique [0002] Due to the absorption and scattering of light by suspended particles in water, and the different attenuation degrees of light of different wavelengths underwater, underwater images usually have problems such as blurred details, low contrast, and color distortion. Therefore, it is necessary to improve the quality of underwater images . Since the underwater optical imaging model and the fog imaging model have certain similarities, the traditional dark channel prior defogging method can be used to eliminate the underwater backscattering blur and restore a clear image. However, unlike foggy images with no obvious color shift, the absorption characteristics of water media for different wavelengths of light are very different. The traditional dark channel prior defogg...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T5/50
CPCG06T5/50G06T5/73H04N23/88G06T2207/10024G06T2207/20192G06T2207/20221H04N1/6077H04N9/646
Inventor 陈哲涵马小明
Owner UNIV OF SCI & TECH BEIJING
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