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Automatic exposure processing method and device with backlight compensation

A technology of automatic exposure and processing method, which is applied to color TV parts, TV system parts, TVs, etc. It can solve the problems of insufficient brightness of faces and affect face recognition, etc., and achieve brightness improvement, high contrast, effective The effect of receiving

Active Publication Date: 2019-01-25
FUJIAN STAR NET COMM
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Problems solved by technology

[0005] One of the purposes of the present invention is to overcome the above shortcomings, through image data processing, and adjust the exposure value of the camera according to the result, improve the quality of the subsequent image acquisition, and at the same time solve the problem that the face is in a backlit scene, the traditional automatic exposure processing is to suppress the excessively bright backlight , the exposure value will be adjusted to a lower value, resulting in insufficient brightness of the face and affecting the recognition of the face

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  • Automatic exposure processing method and device with backlight compensation
  • Automatic exposure processing method and device with backlight compensation
  • Automatic exposure processing method and device with backlight compensation

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Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0062] like figure 1 , a flow chart of the steps of an automatic exposure processing method with backlight compensation according to an embodiment of the present invention; the steps are as follows:

[0063] 1. Calculate the brightness data of the image frame and obtain the histogram information;

[0064] In practical applications, the image frame is collected by the camera, and the brightness data of the image frame is calculated to obtain the grayscale histogram...

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Abstract

The invention belongs to the technical field of video image processing, and in particular relates to an automatic exposure processing method and device with backlight compensation. The method includes the steps of: calculating the brightness data of the image frame to obtain histogram information; judging whether the image is in a backlight situation according to the histogram information and the brightness information of the image; if it is in a backlight situation, performing backlight compensation processing; if in a normal light situation, executing Automatic exposure processing. This solution judges whether there is a backlight situation based on the image frames collected in real time by the camera, and adjusts the exposure value of the camera to improve the backlight phenomenon of the next captured image, and increases the brightness of the relatively dark area by limiting the exposure value. , The definition has been improved, which can solve the problem of insufficient face brightness affecting recognition in the traditional automatic exposure processing backlight scene.

Description

technical field [0001] The invention belongs to the technical field of video image processing, and in particular relates to an automatic exposure processing method and device with backlight compensation. Background technique [0002] In building monitoring and intercom scenarios, for the images captured by the camera, more emphasis is placed on the clarity of nearby faces than the surrounding environment. When the camera is shooting in a backlight environment, a black image will appear on the screen. However, the backlight environment is unavoidable in security. At this time, backlight compensation processing is required. The traditional backlight compensation processing is basically for the video that has been shot. Or the image is compensated by using different algorithms, which cannot adjust the exposure value of the camera and improve the backlight phenomenon of subsequent captured images. In addition, if the face is in a backlit scene, the traditional automatic exposur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235
CPCH04N23/70H04N23/71
Inventor 林洪艺吴振文卢云飞陈风
Owner FUJIAN STAR NET COMM
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