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Underwater image enhancement method based on unsupervised color correction

An underwater image and color correction technology, applied in image enhancement, image data processing, instruments, etc., can solve problems such as color distortion, achieve the effect of improving illumination and true color, improving visual quality, and eliminating color cast problems

Active Publication Date: 2019-05-17
HARBIN ENG UNIV
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Problems solved by technology

[0007] An underwater image enhancement method based on unsupervised color correction of the present invention can effectively identify image color cast, and solve the problem of color distortion of underwater images that are not blue cast by the original method

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  • Underwater image enhancement method based on unsupervised color correction
  • Underwater image enhancement method based on unsupervised color correction
  • Underwater image enhancement method based on unsupervised color correction

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Embodiment Construction

[0015] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0016] With the exploration of ocean, lake, and river resources, underwater images have become an important research field. However, due to the complex and harsh underwater imaging environment, the captured underwater images often have problems such as color distortion and low contrast. Underwater imaging can be represented as a linear superposition of forward scatter components and backscatter components, with forward scatter cau...

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Abstract

The invention belongs to the field of ocean engineering, and particularly relates to an underwater image enhancement method based on unsupervised color correction. According to the method, the limitation that the channel B is used as a protruding channel is improved, so that the color distortion problem of processing the non-blue-color-cast underwater image is effectively solved; The method comprises an RGB color model, a contrast correction method, an HIS color model and an underwater image enhancement method based on unsupervised color correction. Compared with a common underwater image enhancement method, the underwater image enhancement method has the advantages that the underwater image enhancement method is improved into a self-adaptive method and has good processing effects on different color cast; The image is effectively balanced, color cast is eliminated, the illumination is improved, and the true color is increased. The method is easy to implement, small in calculated amountand high in reliability, the feasibility of underwater optical image recognition is improved, and the method has positive significance for development of unmanned underwater vehicles in the aspects of underwater operation tasks and the like in the future.

Description

technical field [0001] The invention belongs to the field of marine engineering, and in particular relates to an underwater image enhancement method based on unsupervised color correction. Background technique [0002] Due to the complex and harsh underwater imaging environment, the captured underwater images generally have shortcomings such as low contrast, blur and color cast. The degradation of image visual quality will have a serious adverse effect on the performance of subsequent feature extraction and target recognition processes, so it is of great significance to enhance the underwater image preprocessing. [0003] In China, the Marine Technology Research Center of Harbin Engineering University obtained information such as the orientation and size of underwater targets through the processing of optical-acoustic images in 2003 and 2004 marine engineering tests, and made great achievements, thus proving that underwater images The processing algorithm is real and reliab...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/40
CPCY02A90/30
Inventor 杜雪张丽娜任旭赵璇张伟张勋管凤旭
Owner HARBIN ENG UNIV
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