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Underwater image enhancement method based on color correction and detail enhancement

An underwater image, color correction technology, applied in image enhancement, image analysis, image data processing and other directions, can solve the problem of the quality degradation of the collected image, to ensure the color and details, improve the image clarity, enhance the effect of visual effects

Active Publication Date: 2020-01-14
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality of the acquired image is degraded due to the scattering and absorption of the underwater acquired image

Method used

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  • Underwater image enhancement method based on color correction and detail enhancement
  • Underwater image enhancement method based on color correction and detail enhancement
  • Underwater image enhancement method based on color correction and detail enhancement

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Experimental program
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Embodiment

[0083] Such as figure 2 As shown, the present invention provides an experimental effect diagram after processing the underwater coral scene with other algorithms. From the enhanced effect diagram of the experiment, it can be clearly shown that the method of the present invention and other methods have a certain enhancement effect, which improves the global contrast of the image and enhances the local detail information. From the analysis of the renderings, the coral image enhanced by the SSR algorithm, the MSR algorithm and the MSRCR algorithm has a color cast. The method of the invention effectively enhances the image contrast and has richer colors. The foreground texture of the coral treated by the method of the invention is clear, the color is rich, and the contrast is obviously enhanced. Therefore, the method of the invention can effectively enhance image details and restore colors.

[0084] Such as image 3 As shown, the present invention provides an experimental eff...

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Abstract

The invention provides an underwater image enhancement method based on color correction and detail enhancement. The underwater image enhancement method provided by the invention comprises the following two steps: color correction and detail enhancement. The method comprises: firstly, selecting a partially clear underwater image, adjusting the Lab value of the underwater image to be restored by referring to the average value of the clear image Lab, and color correction is achieved; For a color correction image, converting an RGB space into an HSV space, performing histogram equalization on H, performing normalization processing on S and V, and achieving contrast enhancement; and secondly, processing the linear combination of the contrast-enhanced image by adopting a Laplace operator to obtain an edge mapping graph, and carrying out linear weighted fusion on the edge mapping graph, the contrast-enhanced image and the edge mapping graph to obtain a final enhanced underwater image. According to the algorithm, color correction is realized by adjusting the Lab space value, and detail enhancement is realized by using the Laplace operator, so that the image has rich detail information on the basis of color correction, and the overall visual effect of the image is improved.

Description

technical field [0001] The invention relates to an image enhancement method, in particular to an underwater image enhancement method based on color correction and detail enhancement. Background technique [0002] Due to the rich resources in the ocean, the development and protection of marine resources has been paid more and more attention. Underwater images are an important carrier of ocean information, and the acquisition of underwater images is closely related to underwater imaging systems. Underwater images have important application value in many research fields such as marine biology, archaeology, underwater mapping, underwater exploration and underwater target detection. Due to the scattering and absorption of underwater images, the quality of the collected images is degraded. Scattering is when light collides with suspended particles, and the direction of propagation changes, resulting in blurred images. Absorption is the absorption of light by suspended particles...

Claims

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Application Information

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IPC IPC(8): G06T7/90G06T5/00G06T5/40
CPCG06T7/90G06T5/40G06T2207/20192G06T2207/10024G06T5/00
Inventor 张维石周景春张得欢
Owner DALIAN MARITIME UNIVERSITY
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