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Method and apparatus for automatically switching day and night modes based on RGB-IR sensor

An automatic switching and sensor technology, which is applied to TVs, color TV parts, electrical components, etc., can solve the problems of increasing camera size and cost, camera stability and reliability deterioration, and reducing misjudgment of day and night mode switching , save hardware cost, and reduce the effect of constant switching of infrared light switches

Pending Publication Date: 2018-08-07
杭州雄迈集成电路技术股份有限公司
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Problems solved by technology

This method can achieve multi-band imaging very well, but the built-in mechanical double filter switch will not only increase the size and cost of the camera, but also decrease the stability and reliability of the camera as the number of times of use increases. getting worse gradually

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  • Method and apparatus for automatically switching day and night modes based on RGB-IR sensor
  • Method and apparatus for automatically switching day and night modes based on RGB-IR sensor
  • Method and apparatus for automatically switching day and night modes based on RGB-IR sensor

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Embodiment Construction

[0031] 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.

[0032] Such as figure 1 As shown, the present invention provides an embodiment of an automatic switching method based on RGB-IR sensor day and night mode, which specifically includes the following steps:

[0033] 1) Obtain the gain and exposure time of the RGB-IR sensor, and simultaneously count the mean values ​​of the RGB and IR color components of the Bayer data in blocks, and output the mean values ​​of the R, G, B and IR components of each color component;

[0034] 2) Determine the exposure parameter P1 according to the gain obtained in step 1) and the exposure time, and calculate the infrared intensity S1 of the image based on the mean values ​​of the statistical RGB and IR components;

[0035] 3) Determine whether the current exposure parameter P1 is g...

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Abstract

The invention provides a method and apparatus for automatically switching day and night modes based on an RGB-IR sensor. The device comprises the RGB-IR sensor, a two-pass filter, lens and an infraredlamp. The method comprises the following steps: obtaining a gain and an exposure time of the RGB-IR sensor, and performing block statistics on the RGB and IR color component means of the Bayer data;determining an exposure parameter P1 according to the obtained gain and exposure time, and calculating image average saturation S1 based on the statistical RGB component mean; if (P1)TP1)&&(S1)TS1), switching the day mode into the night mode, and meanwhile turning on the infrared lamp; determining an exposure parameter P2 according to the obtained gain and exposure time, and calculating image average saturation S2 based on the statistical RGB component mean; and if (P2(TP2)&&(S2)TS2 ), switching the night mode into the day mode, and turning off the infrared lamp. By adoption of the method andapparatus, the accuracy of day and night switching threshold can be improved, the misjudgment of the day / night switching mode and the problem of switching back and forth between the infrared lamp arereduced, 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 a method and device for automatically switching between day and night modes based on an RGB-IR 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 our best to solve the color shift problem, a method widely used in the industry is to build a set of double filter switchers in the camera lens group...

Claims

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Application Information

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IPC IPC(8): H04N5/232H04N5/235H04N5/243H04N9/73
CPCH04N9/73H04N23/667H04N23/73H04N23/76
Inventor 曾勇尚宇盟
Owner 杭州雄迈集成电路技术股份有限公司
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