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Luminance regulation method, terminal and computer readable storage medium

A brightness adjustment and brightness technology, applied in terminals and computer-readable storage media, in the field of brightness adjustment, can solve problems such as lack of image information, face overexposure, underexposure, etc., to prevent face overexposure or underexposure, avoid the missing effect of

Active Publication Date: 2018-06-22
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, when calculating the target brightness corresponding to the face recognition frame according to formula (1), the weight value w is a preset value, so when the overall brightness L1 of the preview image is different from the brightness L2 corresponding to the face recognition frame When it is larger, the target brightness L determined according to the above method may cause the face in the preview image to be overexposed or underexposed, resulting in the loss of image information

Method used

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  • Luminance regulation method, terminal and computer readable storage medium
  • Luminance regulation method, terminal and computer readable storage medium
  • Luminance regulation method, terminal and computer readable storage medium

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Embodiment 1

[0079] image 3 Schematic diagram of the implementation process of the brightness adjustment method proposed for the embodiment of the present invention Figure 1 ,like image 3 As shown, in an embodiment of the present invention, the method for terminal brightness adjustment may include the following steps:

[0080] Step 101. Obtain a first brightness parameter and a second brightness parameter corresponding to the preview image; wherein, the first brightness parameter is the overall brightness value corresponding to the preview image; the second brightness parameter is the brightness value corresponding to a preset area in the preview image.

[0081] In an embodiment of the present invention, the above-mentioned terminal may first obtain the first brightness parameter and the second brightness parameter corresponding to the current preview image. Wherein, the above-mentioned first brightness parameter is used to represent the overall brightness value of the above-mentioned...

Embodiment 2

[0100] Based on embodiment one, Figure 5 Schematic diagram of the implementation process of the brightness adjustment method proposed for the embodiment of the present invention Figure II ,like Figure 5 As shown, in the embodiment of the present invention, the method for the terminal to determine the target weight value according to the screen-to-body ratio and the second brightness parameter may include the following steps:

[0101] Step 103a: Determine a screen-occupied weight value according to the screen-occupied ratio, the first preset screen-occupied threshold, and the second preset screen-occupied threshold.

[0102] In an embodiment of the present invention, after the terminal determines the screen occupancy ratio corresponding to the preset area in the preview image, it may The threshold value determines the screen occupation weight value corresponding to the above screen occupation ratio.

[0103] It should be noted that, in the embodiment of the present invent...

Embodiment 3

[0126] Based on the second embodiment, Figure 10 Schematic diagram of the implementation process of the brightness adjustment method proposed for the embodiment of the present invention Figure five ,like Figure 10 As shown, in the embodiment of the present invention, the method for the terminal to determine the weight value of the screen occupation according to the screen occupation ratio, the first preset screen occupation threshold and the second preset screen occupation threshold may include the following steps:

[0127] Step 201. When the screen occupation ratio is less than or equal to a first preset screen occupation threshold, determine a first weight value as the screen occupation weight value.

[0128] In an embodiment of the present invention, the terminal acquires the first weight value corresponding to the first preset screen-occupying threshold and the second weighting value corresponding to the second preset screen-occupying threshold, and determines the prev...

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Abstract

The embodiment of the invention discloses a luminance regulation method, a terminal and a computer readable storage medium. The luminance regulation method comprises the following steps that: obtaining a first luminance parameter and a second luminance parameter corresponding to a preview image, wherein the first luminance parameter is an integral luminance value corresponding to the preview image, and the second luminance parameter is the luminance value corresponding to a preset area in the preview image; determining a screen-to-body ratio corresponding to the preview area; according to thescreen-to-body ratio and the first luminance parameter, determining a target weight value; and according to the target weight value, the first luminance parameter and the second luminance parameter, carrying out luminance regulation on the preset area. By use of the luminance regulation method provided by the embodiment of the invention, a face in the preview image can be protected from overexposure or underexposure, and therefore, image information loss can be avoided.

Description

technical field [0001] The present invention relates to terminal technology, in particular to a method for adjusting brightness, a terminal and a computer-readable storage medium. Background technique [0002] In the prior art, for a preview image including a human face, the terminal may perform brightness adjustment according to a preset weight value w. Specifically, the terminal can respectively determine the overall brightness L1 of the preview image and the brightness L2 of the face recognition frame, and then calculate the target corresponding to the face recognition frame according to the brightness L2 of the face recognition frame, the overall brightness L1 of the preview image, and the weight value w. Brightness L, where, L can be obtained by the following formula (1), [0003] L=L2*w+(1-w)L1 (1) [0004] However, when calculating the target brightness corresponding to the face recognition frame according to formula (1), the weight value w is a preset value, so whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/451G06F3/0484H04N5/235
CPCG06F3/04847H04N23/71
Inventor 王睿
Owner NUBIA TECHNOLOGY CO LTD