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Method, device, terminal and computer-readable storage medium for determining image brightness value

A technology of image brightness and determination method, applied in image communication, parts of color TV, parts of TV system, etc., can solve the problems of dark brightness, bright brightness, and dark image imaging.

Inactive Publication Date: 2020-01-24
爱博康电子(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In image processing, it is often necessary to determine the brightness value of the image, so that the processed image is visually improved and more beautiful; in the existing method for determining the brightness value of the image, the brightness of each block of the collected image is Values ​​are weighted and summed to determine the image brightness value; however, this method is only used for scenes with better light in some images, and for scenes with poor light in the image, such as dark or strong light scenes, this method The determined image brightness value still has the problem of darker brightness or brighter brightness; therefore, the existing method for determining the image brightness value will lead to darker or brighter images in dark or strong light scenes

Method used

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  • Method, device, terminal and computer-readable storage medium for determining image brightness value
  • Method, device, terminal and computer-readable storage medium for determining image brightness value
  • Method, device, terminal and computer-readable storage medium for determining image brightness value

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Embodiment 1

[0060] Based on the foregoing embodiments, this embodiment of the present invention provides a method for determining the brightness value of an image, which can be applied to a terminal, and the functions implemented by the method for determining the brightness value of an image can be realized by calling program codes by the processor in the terminal Of course, the program code can be stored in a computer storage medium. It can be seen that the terminal includes at least a processor and a storage medium.

[0061] This embodiment provides a method for determining an image brightness value, image 3 It is a schematic flow chart of the method for determining the image brightness value in Embodiment 1 of the present invention, refer to image 3 As shown, the method for determining the brightness value of the above image includes:

[0062] S301: Divide the collected image into blocks, and set a brightness weight value for each block image;

[0063] When the user uses the camera...

Embodiment 2

[0085] Based on the foregoing embodiments, this embodiment provides a method for determining an image brightness value, which can be applied to a terminal, and the functions implemented by the method for determining an image brightness value can be implemented by calling a program code by a processor in the terminal, Of course, the program code can be stored in a computer storage medium. It can be seen that the terminal includes at least a processor and a storage medium.

[0086] On the basis of the first embodiment above, in order to determine the second brightness value of the image, in an optional embodiment, S304 may include:

[0087] S401: setting a lower limit brightness value and an upper limit brightness value for the dark area, and setting a lower limit brightness value and an upper limit brightness value for the bright area;

[0088] Specifically, the lower limit brightness value A set for the dark area 1 and the upper limit brightness value A 2 , the lower limit l...

Embodiment 3

[0115] Based on the foregoing method embodiments, this embodiment provides a terminal, Figure 7 It is a schematic structural diagram of the terminal in Embodiment 3 of the present invention, refer to Figure 7 As shown, the terminal includes a processor 71, a memory 72, and a communication bus 73; the communication bus 73 is used to realize connection and communication between the processor 71 and the memory 72; value determination procedure to achieve the following steps:

[0116] Divide the collected image into blocks, and set the brightness weight value for each block image; determine the brightness value of each block image, and perform weighted summation according to the brightness weight value of each block image, and after the weighted summation The brightness value of the image is used as the first brightness value of the image; the image blocks whose brightness values ​​are lower than the first preset threshold are determined as dark areas of the image, and the imag...

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Abstract

The embodiment of the present invention discloses a method for determining the brightness value of an image, the method comprising: dividing the collected image into blocks, and setting a brightness weight value for each block image; determining the brightness value of each block image , and perform weighted summation according to the brightness weight value of each image, and use the weighted summed brightness value as the first brightness value of the image; determine the image block whose brightness value is lower than the first preset threshold as the dark area of ​​the image , determine the image block whose brightness value is higher than the second preset threshold as the bright area of ​​the image; calculate the average brightness value of the dark area and the average brightness value of the bright area, according to the average brightness value of the dark area and the average brightness value of the bright area Determine the second brightness value of the image; determine the brightness value of the image according to the first brightness value of the image and the second brightness value of the image. The embodiment of the invention also discloses an image brightness value determining device, a terminal and a computer-readable storage medium.

Description

technical field [0001] The present invention relates to a technology for determining an image brightness value in a terminal, in particular to a method, a device, a terminal and a computer-readable storage medium for determining an image brightness value. Background technique [0002] At present, with the continuous development of smart phones, there are more and more uses of smart phones, which makes people's requirements for smart phones higher and higher. [0003] In image processing, it is often necessary to determine the brightness value of the image, so that the processed image is visually improved and more beautiful; in the existing method for determining the brightness value of the image, the brightness of each block of the collected image is Values ​​are weighted and summed to determine the image brightness value; however, this method is only used for scenes with better light in some images, and for scenes with poor light in the image, such as dark or strong light s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/235H04N5/243H04N23/76
CPCH04N23/74H04N23/76
Inventor 张啸林
Owner 爱博康电子(深圳)有限公司