White balance processing method and device for camera system

A processing method and technology of white balance, applied in the parts of TV system, color signal processing circuit, parts of color TV, etc., can solve the problems of poor accuracy of white balance, improve accuracy and avoid poor accuracy of white balance , the effect of high accuracy

Inactive Publication Date: 2019-04-02
BEIJING LUSTER LIGHTTECH
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AI Technical Summary

Problems solved by technology

[0005] This application provides a white balance processing method and device for a camera system to solve the problem of poor white balance accuracy

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  • White balance processing method and device for camera system
  • White balance processing method and device for camera system
  • White balance processing method and device for camera system

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0046] see figure 1 , which is a schematic flowchart of a white balance processing method for a camera system provided in an embodiment of the present application, as shown in figure 1 As shown, the white balance processing method for the camera system provided in the embodiment of the present application specifically includes the following ...

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Abstract

The invention provides a white balance processing method and device for a camera system. The method comprises the steps of carrying out flat-field correction on all pixels of the camera system to obtain a grayscale correction value of a reference channel and a grayscale correction value of a channel to be calibrated under a white reference object of the camera system; obtaining a white balance gain value of the channel to be calibrated relative to the reference channel according to the ratio of the grayscale correction value of the channel to be calibrated and the grayscale correction value ofthe reference channel; and obtaining a white balance correction value of the channel to be calibrated according to the product of the grayscale correction value and the white balance gain value of the channel to be calibrated. The embodiment of the invention carries out white balance processing on the basis of the flat-field correction, simplifies the processing steps of a white balance algorithmand improves the accuracy of the white balance.

Description

technical field [0001] The present application relates to the technical field of camera system calibration, and in particular to a white balance processing method and device for a camera system. Background technique [0002] When shooting with a camera system, the captured photos may have a color cast, for example, the photo is reddish or bluish, especially for the presentation of white objects. This is because different light sources will produce different color tendencies in the picture, and people's visual system will automatically compensate for different light, so no matter what kind of light environment, people see white objects as white Yes, but the camera will only directly record the color presented in front of it, which will lead to color cast in the picture. Often, the color cast of a camera system can be corrected with automatic white balance. [0003] In the prior art, a common method for automatic white balance of the camera system is to calculate the gain co...

Claims

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Application Information

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IPC IPC(8): H04N9/73H04N9/64H04N5/235
CPCH04N9/64H04N23/73H04N23/88
Inventor 于媛媛姚毅
Owner BEIJING LUSTER LIGHTTECH
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