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Image brightness enhancement method and apparatus

A technology of image brightness and brightness enhancement, applied in the field of image processing, can solve the problems of video images becoming black and white images, video image colors cannot be restored, etc., to achieve the effect of increasing brightness and enhancing brightness

Active Publication Date: 2018-01-09
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for image brightness enhancement, which are used to solve the problem in the prior art that the color of the video image cannot be restored after the supplementary infrared light is irradiated, so that the collected video image becomes a black and white image

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  • Image brightness enhancement method and apparatus

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Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] Embodiments of the present invention provide an image brightness enhancement method and device to solve the problem in the prior art that the color of a video image cannot be restored after being irradiated with supplementary infrared light, so that the collected video image becomes a black and white image. Wherein, the method and the device are based on the same inventive concept, and since the principles of the method and the de...

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Abstract

The invention discloses an image brightness enhancement method and apparatus for solving the problem in the prior art that after supplementary infrared light is irradiated, the color of a video imagecannot be restored, such that the collected video image becomes a black-and-white image. The method comprises the following steps: a camera device controls the opening or closing of a fill-in light according to a received control single; when controlling the closing of the fill-in light, the camera device controls a light sensing unit to collect color image data containing color information; whencontrolling the opening of the fill-in light, the camera device controls the light sensing unit to collect brightness image data containing brightness information; and the camera device synthesizes the color image data with the brightness image data to generate image comprising the color information and the brightness information.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image brightness enhancement method and device. Background technique [0002] In the application of image acquisition or video surveillance, there are often low-light situations such as night vision or backlight, and the brightness of video images captured by video surveillance cameras is usually low, and the contrast ratio also decreases accordingly. These images not only look poor to the human eye, and many key elements are difficult to see clearly, but also bring great difficulties to machine recognition and monitoring and tracking. [0003] At present, the commonly used solution is to supplement infrared light irradiation in the shooting area in low-illumination scenes, so that the photosensitive sensor can increase the sensitivity to infrared rays when collecting video images of the shooting area, thereby improving the brightness of the video image. However, due...

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Application Information

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IPC IPC(8): H04N5/235H04N5/243
CPCH04N23/73H04N23/11H04N9/77H04N23/76
Inventor 卢二利赵军丁乃英陈明珠徐志永
Owner ZHEJIANG DAHUA TECH CO LTD
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