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Enhancing method of low-light video images

A video image and image technology, applied in the field of image processing, can solve problems such as poor real-time performance

Inactive Publication Date: 2014-02-26
SHANGHAI MUNICIPAL ELECTRIC POWER CO +3
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Among them, the most mature application is the Fourier transform, which is based on the Fourier transform of the modified image, transforms the image into the frequency domain, then filters the frequency domain of the image, and finally inversely transforms it into the space domain to obtain enhancement. After the image, but in the real-time processing of the video, the calculation is complex and the real-time performance is poor, which cannot meet the requirements

Method used

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  • Enhancing method of low-light video images
  • Enhancing method of low-light video images
  • Enhancing method of low-light video images

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Embodiment

[0048] Such as Figure 1-3 Shown, a kind of enhancement method of weak light video image is characterized in that, comprises the following steps:

[0049] 1) Find the optimal scale parameter of the Gaussian function in single-scale Retinex;

[0050] 2) Use the strong light image as a reference image for color migration;

[0051] 3) Obtain an image with rich overall color and prominent local details.

[0052] Described step 1) seeks the optimal scale parameter of Gaussian function in single-scale Retinex specifically:

[0053] The Gaussian convolution function can better obtain the brightness image from the original image, and the Gaussian convolution function is

[0054] G ( x , y ) = λexp ( - ( x 2 + ...

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Abstract

The invention relates to an enhancing method of low-light video images. The method comprises the following steps that (1) the optimal scale parameter of a Gaussian function in the single-scale Rctinex; (2) high-light images serve as reference images of color migration; (3) the images having whole rich colors and local outstanding details are obtained. Compared with the prior art, the enhancing method has the advantages of being good in image enhancing effect, obtaining rich image color information and the like.

Description

technical field [0001] The invention relates to an image processing technology, in particular to a method for enhancing video images with weak light. Background technique [0002] Image is an important medium for human beings to transmit information. Among the information processed by human intelligence, visual communication information accounts for more than 75% of the total information received by human beings. Image is an important means for human beings to obtain information, perceive the world, and transform the world. [0003] The construction process of the power grid involves many majors such as project management, civil engineering, and electrical engineering. The cross-industry operations are very obvious, the construction environment is harsh, and there are many construction safety risks and safety hazards. These are the problems that exist in the construction process of the power grid. In contrast to the spirit of the country's "three sets and five majors" and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 郑思国刘刚陈晓东何真珍金永祥
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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