An optimization method for automatic white balance, terminal and computer-readable storage medium

A technology of automatic white balance and optimization method, which is applied in the direction of color signal processing circuit, etc., can solve the problems of low accuracy of awb value and inability to accurately determine the distribution of awb value, and achieve the effect of improving accuracy

Active Publication Date: 2019-08-16
NUBIA TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, for some special scenes, such as pure color scenes, high-brightness scenes, etc., calculations based on existing methods cannot accurately determine the distribution of awb values ​​in the R / G and B / G coordinate systems, that is, For some special scenarios, the accuracy of the awb value obtained by the existing method is low

Method used

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  • An optimization method for automatic white balance, terminal and computer-readable storage medium
  • An optimization method for automatic white balance, terminal and computer-readable storage medium
  • An optimization method for automatic white balance, terminal and computer-readable storage medium

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Embodiment 1

[0076] In the embodiment of the present invention, the RGB color mode is a color standard in the industry, which is achieved by changing the three color channels of red (R), green (G), and blue (B) and their mutual superposition To obtain a variety of colors, RGB is the color representing the three channels of red, green, and blue. This standard includes almost all colors that human vision can perceive, and is one of the most widely used color systems at present.

[0077] Figure 4 It is a schematic diagram of RGB values ​​corresponding to different colors in the embodiment of the present invention, such as Figure 4 As shown, for different colors, the corresponding RGB values ​​are also different. Among them, the maximum value of R value, G value, and B value is 255, and the minimum value is 0.

[0078] Figure 5 It is a schematic diagram of the distribution of RGB values ​​corresponding to different colors in the embodiment of the present invention, such as Figure 5 As s...

Embodiment 2

[0109] Based on the first embodiment above, Figure 10 Schematic diagram of the implementation process of the automatic white balance optimization method proposed for the embodiment of the present invention Figure four ,like Figure 10 As shown, in the embodiment of the present invention, after the terminal acquires the color parameters and brightness parameters corresponding to the preset statistical points in the current scene, that is, after step 101, the method for the terminal to optimize the awb value may also include the following steps:

[0110] Step 107. Calculate the second awb value corresponding to the current scene according to the color parameters.

[0111] In an embodiment of the present invention, after the terminal acquires the color parameter and the brightness parameter corresponding to the preset statistical point in the current scene, the terminal may calculate the second awb value corresponding to the current scene according to the color parameter.

[...

Embodiment 3

[0125] Based on the second embodiment above, Figure 12 Schematic diagram of the implementation process of the automatic white balance optimization method proposed for the embodiment of the present invention Figure six ,like Figure 12 As shown, in the embodiment of the present invention, the method for the terminal to determine the optimized awb value according to the first awb value and the pre-stored brightness weight table may include the following steps:

[0126] Step 104a: Determine the first weight value corresponding to the first awb value and the second weight value corresponding to the second awb value from the pre-stored brightness weight table according to the brightness parameter.

[0127] In an embodiment of the present invention, after the above-mentioned terminal determines the first automatic white balance awb value according to the above-mentioned color parameter and the above-mentioned brightness parameter, and calculates the second awb value corresponding...

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Abstract

The embodiment of the invention discloses an automatic white balance optimization method, a terminal and a computer readable storage medium. The automatic white balance optimization method comprises the following steps: obtaining color parameters and brightness parameters corresponding to preset statistical points in a current scene, wherein one preset statistical point corresponds to one color parameter and one brightness parameter; judging whether to perform optimization processing according to the color parameters and the brightness parameters; if it is judged that the optimization processing is performed, determining a first automatic white balance awb value according to the color parameters and the brightness parameters; and determining the optimized awb value according to the first awb value and a pre-stored brightness weight table. By adoption of the automatic white balance optimization method provided by the embodiment of the invention, the accuracy of the awb value in a special scene can be effectively improved.

Description

technical field [0001] The invention relates to terminal technology, in particular to an automatic white balance optimization method, a terminal and a computer-readable storage medium. Background technique [0002] The purpose of automatic white balance (awb) processing is to uniformly compensate the color deviation caused by the color temperature environment and the inherent color channel gain deviation of the terminal itself by changing the gain of the color channel of the terminal, so that the obtained The image can correctly reflect the true color of the object. In the prior art, when calculating the automatic white balance, it usually counts the statistical points corresponding to the current scene, including collection points and light source points, and then according to the position distribution and correspondence of the statistical points in the R / G and B / G coordinate systems The weight value of is calculated. figure 1 It is a schematic diagram of common awb value...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73
CPCH04N9/73
Inventor 张啸林
Owner NUBIA TECHNOLOGY CO LTD
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