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A method and device for automatic white balance

An automatic white balance and white balance technology, applied in the field of image processing, can solve problems such as poor user experience, white balance algorithm does not conform to human perception, etc., and achieve the effect of improving user experience

Active Publication Date: 2018-09-14
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to propose an automatic white balance method and device, aiming to solve the problem that the existing white balance algorithm does not conform to the perception of the human eye and the user experience is poor

Method used

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  • A method and device for automatic white balance
  • A method and device for automatic white balance
  • A method and device for automatic white balance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Such as image 3 As shown, the present embodiment proposes an automatic white balance method, and the method includes steps:

[0085] S10. Obtain a reference point from the photo, and judge the color temperature of the environment where the camera is located according to the reference point, where the color temperature includes historical color temperature and current color temperature;

[0086] S20. Obtain motion state information of the camera;

[0087] S30. Judging the color temperature of the current environment where the camera is located according to the motion state information;

[0088] S40. Perform white balance on the photo by using the color temperature of the current environment where the camera is located.

[0089] In this embodiment, the camera is all mobile terminals with a camera function, such as: a professional camera that is only used for taking pictures or a mobile phone with a camera function, because white balance refers to the adjustment of the ...

Embodiment 2

[0099] Such as Image 6 As shown, in this embodiment, the S30 includes:

[0100] S31. Calculate the weight of the historical statistical information, the weight of the historical statistical information is related to the moving distance, the smaller the moving distance, the greater the weight of the historical statistical information, and the larger the moving distance, the smaller the weight of the historical statistical information;

[0101] S32. Calculate the weight of the current statistical information, the weight of the current statistical information is related to the moving distance, the smaller the moving distance, the smaller the weight of the current statistical information, and the larger the moving distance, the greater the weight of the current statistical information;

[0102] S33. Select the color temperature of the current environment where the camera is located according to the weight of the historical statistical information and the weight of the current sta...

Embodiment 3

[0106] Such as Figure 7 As shown, in this embodiment, an automatic white balance device includes:

[0107] The color temperature acquiring module 10 is used to acquire a reference point from the photo, judge the color temperature of the environment where the camera is located according to the reference point, and the color temperature includes historical color temperature and current color temperature;

[0108] Motion state acquiring module 20, for obtaining the motion state information of camera;

[0109] Judging module 30, for judging the color temperature of the environment where the current camera is located according to the motion state information;

[0110] The white balance module 40 is configured to use the color temperature of the current environment where the camera is located to perform white balance on the photo.

[0111] In this embodiment, the color temperature of the environment where the camera is located is judged based on the motion state information of the ...

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Abstract

The invention discloses an automatic white balance method and device, which belong to the technical field of image processing. The method includes: obtaining a reference point from a photo, and judging the color temperature of the environment where the camera is located according to the reference point. The color temperature includes historical color temperature and current color temperature Obtain the motion state information of the camera; judge the color temperature of the current environment where the camera is located according to the motion state information; use the color temperature of the current camera environment to white balance the photo, and judge the environment where the camera is located by using the motion state information of the camera The color temperature makes the photos taken have more realistic colors, which conforms to the feeling of human eyes and improves the user experience.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an automatic white balance method and device. Background technique [0002] Heating the black body from absolute zero, every degree of temperature increase is called 1 Kelvin (indicated by the letter K), when the temperature rises to a certain level, the black body will radiate visible light, its spectral composition and human The feeling will also change accordingly as the temperature continues to rise. Therefore, the temperature at which the black body radiates a certain color of light is set as the color temperature of the light source emitting the same color of light. It is worth noting that the spectral distribution of actual light sources is different, and the color temperature only represents the degree of emphasis on energy, and does not reflect the specific spectral distribution, so even light sources with the same color temperature may cause different color re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/73
CPCH04N23/88H04N9/73
Inventor 蒋涛
Owner NUBIA TECHNOLOGY CO LTD
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