Improved high-frequency emphasis filtering rapid sea fog image enhancement method

An image enhancement and image technology, applied in image enhancement, image data processing, instruments, etc., can solve problems such as increasing the difficulty of dehazing in land dehazing algorithms and restricting the real-time performance of algorithms

Active Publication Date: 2015-07-29
HARBIN ENG UNIV
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Problems solved by technology

The above two special situations have seriously increased the difficulty of the current land fog removal algorithm, and the complex algorithm seriously restri

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  • Improved high-frequency emphasis filtering rapid sea fog image enhancement method
  • Improved high-frequency emphasis filtering rapid sea fog image enhancement method
  • Improved high-frequency emphasis filtering rapid sea fog image enhancement method

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] The present invention relates to a preprocessing technology for the visual system of water surface ships. By using an improved high-lift filter enhancement algorithm, the contrast and visibility of foggy images on the sea surface can be greatly improved, and the improved algorithm in this paper can greatly improve the Improve the dehazing efficiency of sea fog images.

[0047]The object to be processed by this method is the blurred image under the sea fog, and the blurred image is collected by an optical camera installed on a ship. Enhanced dehazing processing is performed on the collected images. The main step is to enhance the original sea fog image through the improved high-lift filter, so as to obtain the enhanced clear image.

[0048] The method proposed by the invention can effectively enhance the image under the sea fog scene, and is applicable to the v...

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Abstract

The invention belongs to the field of image enhancement, and particularly relates to an improved high-frequency emphasis filtering rapid sea fog image enhancement method. The method comprises the steps that (1) sea images are acquired; (2) sea fog of the images based on an improved high-frequency emphasis filtering algorithm is removed; and (3) clear images are displayed. The method is suitable for all ships on the water surface, and the processed images with fog on the water surface are acquired by visible light cameras installed on the ships on the water surface. The improved high-frequency emphasis filtering enhancement algorithm is provided so that visibility and contrast ratio of the sea fog blurred images can be greatly enhanced. With processing of the algorithm, sea navigation adaptive capacity of the ships on the water surface can be greatly enhanced, and navigation safety of the ships on the water surface can be greatly guaranteed.

Description

technical field [0001] The invention belongs to the field of image enhancement, and in particular relates to an improved high-lift filter fast sea fog image enhancement method. Background technique [0002] There is a large amount of water vapor in the sea. Due to the increase of water vapor or the cooling of warm air by the sea surface, very dense fog appears on the sea surface, and the foggy area is large and lasts for a long time. The biggest feature is that the visibility is extremely small, often several meters away In such a short distance, surface ships often have no time to slow down and turn, causing serious disasters such as ship grounding or collision, seriously affecting the safe operation of surface ships. On May 2, 1993, due to the influence of sea fog, a Chinese research ship "Xiangyanghong 16" was hit and sunk by a 38,000-ton Cyprus cargo ship "Silver Horn" in the East China Sea; on May 22, 2006 , my country's cargo ship "Zhonghaitong" and "Hangyu 6" collided...

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Application Information

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IPC IPC(8): G06T5/00
Inventor 马忠丽郝亮亮刘权勇文杰顾衍明张永奇
Owner HARBIN ENG UNIV
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