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Fog-penetrating image generation method and device

An image generation and image technology, applied in image enhancement, image data processing, picture signal generator and other directions, can solve the problems of unrecoverable information, unsatisfactory fog penetration effect, loss of image contrast information, etc., and achieve better effects.

Active Publication Date: 2018-03-06
ZHEJIANG UNIVIEW TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above two fog penetration processing methods have certain limitations: the image taken by optical fog penetration is a black and white image, and the contrast information of the image will be lost when the object reflects infrared light consistently; while digital fog penetration is a post-image enhancement. technology, although color images can be obtained, but the information lost in the transmission process cannot be recovered
It can be seen that the above two fog penetration treatment methods have their own advantages and disadvantages, and the fog penetration effect is not ideal.

Method used

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  • Fog-penetrating image generation method and device
  • Fog-penetrating image generation method and device
  • Fog-penetrating image generation method and device

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Experimental program
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Embodiment approach 1

[0031] Embodiment 1: Two cameras are used for shooting, one camera shoots the first color image, and the other camera shoots the infrared image.

Embodiment approach 2

[0032] Embodiment 2: A camera that can capture both the first color image and the infrared image is used. Usually this type of camera includes a visible light cut-off filter and a corresponding switching device. The camera shoots the first color image under visible light, and then switches to the optical fog penetration mode through the switching device, that is, the visible light is filtered out through the visible light cut-off filter. Infrared light to obtain infrared images. In a preferred embodiment, the central wavelength of the visible light cut-off filter can be selected within the range of 720nm-950nm, so as to obtain a better effect of penetrating fog by using the near-infrared band.

Embodiment approach 3

[0033] Embodiment 3: acquire the original image, generate the first color image and infrared image after processing the original image, the specific process is as follows: first, acquire the Component original image (RAW image). In the embodiment of the present application, the RGB-IR sensor is used to obtain the above original image. The RGB-IR sensor was first used for distance measurement, and later used in common monitoring scenarios for civil security. After the original image is acquired, the R, G, B and IR components in the original image are respectively subjected to direction-based interpolation processing to obtain each component image, and the obtained R, G, and B component images are synthesized to generate a first color image, Take the IR component image as an infrared image.

[0034] It can be seen that Embodiment 3 can obtain the first color image and infrared image at the same time by processing the original image. Compared with Embodiment 1 and Embodiment 2, ...

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Abstract

The present application provides a method and device for generating a fog-penetrating image. The method includes: acquiring a first color image and an infrared image; performing enhancement processing on the first color image to generate a second color image; performing an enhancement process on the second color image Bright color separation to obtain a first brightness image and a color image; image fusion of the first brightness image and the infrared image to obtain a second brightness image; synthesis of the second brightness image and the color image to generate a fog-through image . Through this application, it is possible to obtain a color through-fog image containing a large amount of detailed information, and the effect of the fog-through treatment is better.

Description

technical field [0001] The present application relates to the technical field of video surveillance, in particular to a method and device for generating a fog-penetrating image. Background technique [0002] Fog penetration technology is mainly used in video surveillance scenarios with low visibility such as foggy weather or air pollution. At present, fog penetration technology mainly includes optical fog penetration and digital fog penetration. Among them, optical fog penetration uses the principle of longer near-infrared light wavelength and less interference from fog to obtain clearer images than visible light; digital fog penetration is based on Image restoration or image enhancement back-end processing techniques sharpen the image. [0003] The above two fog penetration processing methods have certain limitations: the image taken by optical fog penetration is a black and white image, and the contrast information of the image will be lost when the object reflects infrar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18H04N9/04G06T5/00
Inventor 李婵朱旭东刘强
Owner ZHEJIANG UNIVIEW TECH CO LTD
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