Enhancement method of underwater color video image

A color video and image technology, applied in image enhancement, image data processing, instruments, etc., can solve the problems of color video image blurring and loss of details
CN102663697BInactive Publication Date: 2014-04-30DALIAN MARITIME UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN MARITIME UNIVERSITY
Publication Date
2014-04-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an enhancement method of an underwater color video image. The method comprises the following steps of: according to a propagation characteristic of visible light in water, light composition on an image surface and an expected target, establishing an underwater optical imaging model; according to a priori rule of a dark primary color, estimating an absorption function t (x, y) and a scattering parameter A of the underwater optical imaging model, and restoring the underwater color video image I into an image J; and according to an image enhancement processing method based on the Retinex theory, enhancing the image J. According to the invention, the dark primary color priori rule and the image processing method based on the Retinex theory are combined for the first time, firstly restoration processing is carried out according to the underwater optical imaging model to remove fuzzy noise caused by scattering, then enhancement processing is carried out to sharpen the details and adjust the color deviation, and compared with a previous realization method of adopting pure restoration or enhancement, the method of the invention has better robustness.
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Description

technical field

[0001] The invention relates to the technical field of digital image processing, in particular to an enhancement method of underwater color video images. Background technique

[0002] Electromagnetic wave is a kind of radiation wave, which can propagate in the air and vacuum, but attenuates rapidly in the medium other than air. Sound wave is a kind of mechanical wave, which needs to be transmitted by medium. Therefore, the main carrier for detecting and transmitting information in the ocean at present is The propagation distance of sound waves in the ocean can reach tens of thousands of nautical miles, and the lower the frequency, the farther the propagation distance is; the frequency commonly used by acoustic equipment at this stage is up to the order of MHz, while the frequency range of visible light is about the order of 10,000 GHz , therefore, visible light images can show more details than sonar images. Therefore, the current communication, detection an...

Claims

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