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A method, apparatus and computer-readable storage medium for adjusting brightness

A technology for adjusting brightness and computer programs, which is applied in the field of adjusting brightness and computer-readable storage media. It can solve problems such as image brightness errors, different sensor responses, and affecting image brightness, so as to reduce brightness errors and improve image quality.

Active Publication Date: 2021-03-26
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the current brightness formula, the brightness of the image can be obtained by converting the three channel components of red, green and blue RGB, but the coefficients of each channel are fixed, so the values ​​of the three RGB channel components directly affect the brightness of the image
However, different sensors have different responses to the three channels of RGB, and the same sensor has different responses to color temperature in different RGB channels.
Therefore, there are errors in the brightness of images captured by different sensors

Method used

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  • A method, apparatus and computer-readable storage medium for adjusting brightness
  • A method, apparatus and computer-readable storage medium for adjusting brightness
  • A method, apparatus and computer-readable storage medium for adjusting brightness

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Based on the aforementioned embodiments, this embodiment of the present invention provides a method for adjusting brightness, which is applied to a terminal, and the functions implemented by this method can be realized by calling program codes by the processor in the terminal, and of course the program codes can be stored in the computer In the storage medium, it can be seen that the terminal includes at least a processor and a storage medium.

[0051] image 3 It is a schematic flow chart of the method for adjusting brightness in Embodiment 1 of the present invention, such as image 3 As shown, the method includes:

[0052] S301. Perform image analysis on the image to be processed to determine a white balance parameter of the image to be processed;

[0053] The white balance parameters include R channel gain, G channel gain and B channel gain.

[0054] Here, the image to be processed is acquired, and the image to be processed may be an image collected by the sensor ...

Embodiment 2

[0074] Based on the aforementioned embodiments, this embodiment of the present invention provides a method for adjusting brightness, which is applied to a terminal, and the functions implemented by this method can be realized by calling program codes by the processor in the terminal, and of course the program codes can be stored in the computer In the storage medium, it can be seen that the terminal includes at least a processor and a storage medium.

[0075] Figure 6 It is a schematic flow chart of the method for adjusting brightness in Embodiment 2 of the present invention, as Figure 6 As shown, the method includes:

[0076] S601. Acquire a reference area of ​​the image to be processed, perform image analysis on the image of the reference area to determine a white balance parameter of the reference area, and use the white balance parameter of the reference area as the white balance of the image to be processed parameter;

[0077] After the image to be processed is acqui...

Embodiment 3

[0087] Based on the aforementioned embodiments, this embodiment of the present invention provides a method for adjusting brightness, which is applied to a terminal, and the functions implemented by this method can be realized by calling program codes by the processor in the terminal, and of course the program codes can be stored in the computer In the storage medium, it can be seen that the terminal includes at least a processor and a storage medium.

[0088] Figure 8 It is a schematic flow chart of the method for adjusting brightness in Embodiment 3 of the present invention, as Figure 8 shown, including:

[0089] S801. Perform image analysis on the image to be processed to determine a white balance parameter of the image to be processed;

[0090] The white balance parameters include R channel gain, G channel gain and B channel gain.

[0091] S802. Acquire the current scene information, and determine the reference color temperature corresponding to the scene information a...

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Abstract

The invention discloses a method for adjusting brightness, comprising: performing image analysis on the image to be processed to determine the white balance parameters of the image to be processed, the white balance parameters including R channel gain, G channel gain and B channel gain; according to the The white balance parameter and the reference white balance parameter are used to determine a brightness adjustment coefficient; and the brightness adjustment coefficient is used to adjust the brightness of the image to be processed to obtain a target image. Embodiments of the present invention also provide a device and a computer-readable storage medium for implementing the above method. The invention can reduce the brightness error of the image and improve the image quality.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and device for adjusting brightness and a computer-readable storage medium. Background technique [0002] With the continuous development of computer technology, mobile terminals such as mobile phones, as portable communication devices, bring the convenience of mobile communication to users, and at the same time, mobile terminals can also provide functions such as taking pictures and image processing. As the camera function of mobile terminals is more and more widely used, users have higher and higher requirements for taking pictures. Brightness is a crucial factor affecting photo quality. [0003] In the current brightness formula, the brightness of the image can be obtained by converting the three channel components of red, green and blue RGB, but the coefficients of each channel are fixed, so the values ​​of the three RGB channel components directly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N9/73
CPCH04N9/64H04N9/73H04N23/88
Inventor 张文婷
Owner NUBIA TECHNOLOGY CO LTD