Daytime image reference assisted night monitoring video quality improvement method

A technology for video quality and night monitoring, applied in image enhancement, image analysis, image data processing, etc., can solve problems such as enhancement failure in extremely dark areas, image inconsistency, etc., to solve image inconsistency, improve overall quality, and improve color The effect of the distortion problem

Pending Publication Date: 2020-07-17
扆亮海
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Problems solved by technology

The method of the present invention well solves the problems of enhancement failure and image incongruity in extremely dark areas, eliminates the "clump" and "halo" phenomena in the SSR algorithm and the MSRCR algorithm, and eliminates the "ghost image" in the Denighting algo

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  • Daytime image reference assisted night monitoring video quality improvement method
  • Daytime image reference assisted night monitoring video quality improvement method
  • Daytime image reference assisted night monitoring video quality improvement method

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Embodiment Construction

[0056] The following is a further description of the technical solution of the daytime image reference-assisted night surveillance video quality improvement method provided by the present invention in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention and implement it.

[0057] The method for improving the quality of night surveillance video assisted by daytime image reference provided by the present invention is a new method for improving the quality and efficiency of night surveillance video based on the homomorphic filtering algorithm. and the information of the night background image to estimate the foreground illuminance component of the night image to achieve the purpose of enhancing the quality of the foreground.

[0058] The homomorphic filtering algorithm is a method to achieve a balance between image color invariance, contrast enhancement and image dynamic compression. The image is composed of refle...

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Abstract

The invention provides a nighttime monitoring video quality improvement method assisted by daytime image reference. The method is based on a homomorphic filtering basic theory. Different from a traditional homomorphic filtering algorithm, the method has the advantages that daytime background information in the same scene is used as a reflection component to calculate an illuminance component of anight background, similar pixel blocks of the foreground are found around the night foreground, the illuminance component of the foreground is constructed according to the similar block relation of the foreground and the background, and the purpose of enhancing the night foreground is achieved. According to the method, the problems of enhancement failure and image discordance in an extremely darkarea are well solved. According to the method, the phenomena of'lumps' and'halo 'in an SSR algorithm and an MSRCR algorithm are eliminated, the problem of'ghosting' in a Denoising algorithm is eliminated, the problem of color distortion in a classic algorithm in the prior art is greatly improved, the contrast of images after quality improvement is enhanced obviously, and the overall quality of a night monitoring video is greatly improved.

Description

technical field [0001] The invention relates to a method for improving the quality of night surveillance video, in particular to a method for improving the quality of night surveillance video aided by daytime image reference, and belongs to the technical field of night video quality improvement. Background technique [0002] With the rapid improvement of modernization, especially the vigorous development of Internet + in recent years, economic and social activities have been stimulated to a large extent. When the economic and social development is rapid, it is bound to be accompanied by the emergence of various social problems. First of all, the popularization of modern means of transportation such as high-speed rail has greatly promoted the speed of population flow, while the social monitoring and security mechanism has not fully kept up with the pace of economic development, and various preventive and countermeasures and systems are not fully in place. There is still great...

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Application Information

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IPC IPC(8): G06T5/00G06T7/194
CPCG06T5/008G06T7/194G06T2207/10016G06T2207/30232
Inventor 扆亮海刘文平
Owner 扆亮海
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