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Low-illumination image enhancement and denoising method and system and computer equipment

An image enhancement, low-light technology, applied in the field of image processing, can solve problems such as excessive enhancement of bright areas, high noise, loss of details, etc.

Active Publication Date: 2019-10-01
PEKING UNIV
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  • Abstract
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Problems solved by technology

Although the above methods have achieved good results, they also have problems such as excessive noise, excessive enhancement of bright areas, and loss of details.

Method used

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  • Low-illumination image enhancement and denoising method and system and computer equipment
  • Low-illumination image enhancement and denoising method and system and computer equipment
  • Low-illumination image enhancement and denoising method and system and computer equipment

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Embodiment Construction

[0061] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0062] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the protection scope of the present invention is not limited to the specific details disclosed below. EXAMPLE LIMITATIONS.

[0063] In the embodiment of the first aspect of the present invention, a low-light image enhancement and denoising method is proposed, figure 1 A schematic flow chart showing a low-light image enhancemen...

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Abstract

The invention provides a low-illumination image enhancement and denoising method, a low-illumination image enhancement and denoising system, computer equipment and a computer readable storage medium.The low-illumination image enhancement and denoising method comprises the steps: extracting a black and white grayscale image in a YUV format of an original low-illumination image as an initial brightness image; establishing an objective function for solving the brightness component according to the initial brightness map, and solving the brightness component; establishing an objective function for solving a reflection component according to the original low-illumination image and the brightness component, and solving the reflection component; and obtaining a processed image according to the brightness component and the reflection component. The technical scheme of the low-illumination image enhancement and denoising method, for a low-illumination image, can avoid the noise pollution problem caused by alternate decomposition on the basis of a Retinex model and by means of a sequential decomposition method, and introduces a coefficient matrix in the decomposition process to further enhance comparison and suppress noise, so as to carry out enhancement and denoising processing on the low-illumination image at the same time.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a low-light image enhancement and denoising method, a low-light image enhancement and denoising system, computer equipment, and a computer-readable storage medium. Background technique [0002] At present, the continuous development of social media has increased people's demand for high-quality images. However, factors such as ambient light and backlight often lead to the generation of a large number of low-light images. Images obtained under low-light conditions often have the characteristics of low resolution, low contrast, and high noise. Although advanced photography equipment and professional photography skills can reduce the generation of low-light images to a certain extent, such problems are inevitable. In addition, there are a large number of old photos that also contain the above problems. Therefore, for ordinary consumers, it is very practical to enha...

Claims

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/70
Inventor 刘家瑛任旭彤李马丁郭宗明
Owner PEKING UNIV
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