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Automatic switching method of day and night modes based on RGB sensor

An automatic switching and sensor technology, applied in the direction of picture signal generators, TVs, color TV parts, etc., can solve the problems of increasing camera volume and hardware costs, affecting camera reliability, and reducing competitiveness, etc., to achieve the reduction of infrared lights Toggle back and forth, improve system stability and reliability, improve quality effects

Inactive Publication Date: 2018-08-21
浙江芯劢微电子股份有限公司
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Problems solved by technology

However, due to the built-in double filter switcher, the volume and hardware cost of the camera itself are increased, and the long-term switching wear will affect the reliability of the camera. In today's social development, it will make its own competitiveness decline.

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  • Automatic switching method of day and night modes based on RGB sensor
  • Automatic switching method of day and night modes based on RGB sensor
  • Automatic switching method of day and night modes based on RGB sensor

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Embodiment Construction

[0022] The embodiments of the present invention will be further described below. The following examples only further illustrate the present application, and should not be construed as limiting the present application.

[0023] Such as figure 1 As shown, the present invention provides the present invention to propose a method for automatically switching between day and night modes based on RGB sensors, comprising the following steps:

[0024] 1) Obtain the gain and exposure time of the RGB sensor, and simultaneously count the mean values ​​of the RGB color components of the Bayer data in blocks, and output the mean values ​​of the R, G, and B components of each color component;

[0025] 2) Determine the exposure parameter P1 according to the gain obtained in step 1) and the exposure time, and calculate the average saturation S1 of the image based on the mean values ​​of the statistical RGB components;

[0026] 3) Determine whether the current exposure parameter P1 is greater ...

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Abstract

The invention provides an automatic switching method of day and night modes based on an RGB sensor. The method comprises the following steps: obtaining a gain and an exposure time of the RGB sensor, and performing block statistics on Bayer data to obtain average values of color components of the RGB; determining an exposure parameter P1 according to the obtained gain and the exposure time, and calculating image average saturation S1 based on the counted average values of color components of the RGB; if (P1)TP1)&&(S1(TS1), switching the day mode into the night mode, and meanwhile opening an infrared lamp; determining an exposure parameter P2 according to the obtained gain and the exposure time, and calculating image average saturation S2 based on the counted average values of color components of the RGB; and if (P2(TP2)&&(S2)TS2), switching the night mode into the day mode, and closing the infrared lamp. By adoption of the automatic switching method provided by the invention, the accuracy of a day-night switching threshold can be improved, the misjudgment of the day-night switching mode and the problem of switching back and forth of the infrared lamp can be reduced, the hardware cost is reduced, and the system stability and reliability are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of image and video processing, and in particular relates to an automatic day-night mode switching method based on an RGB sensor. Background technique [0002] In order to achieve 24-hour surveillance video for security monitoring, there are various wavelengths of light in nature. The wavelength range of light recognized by human eyes is between 320nm-760nm, and light exceeding 320nm-760nm cannot be seen by human eyes, such as infrared light. The imaging components CCD or CMOS of cameras such as , ultraviolet and other cameras can see most of the wavelengths of light. Due to the participation of various lights, the color restored by the camera and the color seen by the naked eye have deviations in color. [0003] In order to try to solve the color shift problem, a method widely used in the industry in the existing technology is to build a set of double filter switchers in the camera lens group. The double fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/343H04N9/04H04N25/42
CPCH04N25/42H04N23/10
Inventor 曾勇尚宇盟
Owner 浙江芯劢微电子股份有限公司
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