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An Intelligent Enhancement Method Based on Statistical Values ​​of Historical Frame Images

A statistical value and frame image technology, which is applied in the field of intelligent enhancement based on historical frame image statistical values, can solve the problems of manual adjustment, time-consuming and labor-intensive, unable to meet the complex and changeable actual application environment, etc., to achieve overall stability and reliability, soft image Effect

Active Publication Date: 2018-06-12
CHENGDU GUOYI ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of security, most cameras have integrated enhancement algorithms such as adjustable brightness and contrast. However, these functions need to be adjusted manually, which cannot meet the complex and changeable actual application environment.
Especially in the case of many cameras, manually adjusting each camera is time-consuming and laborious

Method used

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  • An Intelligent Enhancement Method Based on Statistical Values ​​of Historical Frame Images

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Embodiment Construction

[0038] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0039] Such as figure 1 As shown, an intelligent enhancement method based on statistical values ​​of historical frame images includes the following steps:

[0040] S1: Capture each frame of image in the input video stream;

[0041] S2: Calculate the statistical value of each frame of image;

[0042] The statistical value of each frame image is calculated on the current frame. When the first frame of the video stream is captured, the image statistical value of the first frame is calculated and the flag is initialized. The initialization method is as follows:

[0043] (1) When the statistical value of the first frame image is less than the first threshold X1, then flag=0;

[0044] (2) When the statistical value of the first frame image is ...

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Abstract

The invention discloses an intelligent enhancement method based on history frame image statistic values, comprising capturing every frame image in input video stream; calculating the statistic values of every frame image; when a previous frame flag is 0, counting whether the statistic values of continuous N frame images are less than a first threshold value X1, if the statistic values are less than the first threshold value X1, turning to self-adaptive gamma enhancement processing, or directly outputting a result; when detecting that the previous frame flag is 1, counting whether the statistic values of continuous N frame images are more than a second threshold value X2, if the statistic values are more than the second threshold value X2, quitting the enhancement processing and directly outputting the result, or continuously carrying out the enhancement processing. According to the actual measurement of the invention, the enhancement function is self-adaptively started through an algorithm in low-light level environments such as night; the enhancement function is automatically closed under relatively strong light condition; and many low-light enhancement type algorithms can be automatically started and closed through the intelligent mode.

Description

technical field [0001] The invention relates to a video enhancement algorithm, in particular to an intelligent enhancement method based on statistical values ​​of historical frame images. Background technique [0002] In the field of security, most cameras have integrated enhancement algorithms such as adjustable brightness and contrast. However, these functions need to be adjusted manually, which cannot meet the complex and changeable actual application environment. Especially in the case of a large number of cameras, it is time-consuming and laborious to manually adjust each camera. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide an intelligent enhancement method for statistically analyzing historical frame statistics of video to determine whether the next frame needs to be enhanced. [0004] The object of the present invention is achieved through the following technical solutions: a k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/14H04N5/202
CPCH04N5/142H04N5/202
Inventor 刘军
Owner CHENGDU GUOYI ELECTRONICS TECH CO LTD