Underwater color image enhancement method integrating dark primary and white balance

Abstract

The invention discloses an underwater color image enhancement method integrating dark primary and white balance and belongs to the technical field of image processing. In an underwater environment, scatter and attenuation of light result in low contrast of an underwater color image, color distortion, and serious image quality reduction; an underwater optical imaging model is established; underwater transmissivity and atmosphere light components are estimated according to a dark primary prior rule, the underwater color image is restored and sharpened; and the restored image is subjected to color correction according to a white balance theory, and the underwater color image is enhanced. The underwater color image enhancement method can better enhance image details according to imaging characteristics of the underwater color image; colors are rich, and the method has higher operational speed.

Description

technical field [0001] The invention relates to the technical field of digital image processing, in particular to an underwater color image enhancement method combining dark primary colors and white balance. Background technique [0002] The 21st century is the era of ocean development. The ocean covers 71% of the earth's surface. It is a basic part of the global life support system. It contains huge resources and energy. The development of human society will inevitably rely more and more on The ocean; at the same time, most of the international security and the security of coastal areas are closely related to the ocean. Therefore, it is of great significance and value to carry out research on underwater image processing methods. [0003] In the marine environment, seawater has always blurred people's sight, greatly reducing the visibility of the scene, which has seriously affected viewers and researchers. With the development of computer vision and image processing techno...

AI Technical Summary

Problems solved by technology

In 2011, Norsila et al. pointed out that the visual color of underwater images sometimes does not represent the real color in reality, and the absorption and scattering of light will reduce the clarity of the image. In order to improve the visibility of underwater images, a method based on the histogram distribution was proposed A manually adjustable method of color correction for image enhancement

Patent search and the latest search of various scientific and technological documents at home and abroad show that there is no underwater color image enhancement method combining dark primary color and white balance that has been published in the literature

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