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Image processing method, mobile terminal and computer readable storage medium

An image processing and mobile terminal technology, applied in the field of image processing, to achieve the best image quality effect

Inactive Publication Date: 2018-06-19
NUBIA TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose an image processing method and a corresponding mobile terminal, aiming to solve the problem of how to correct the white balance of the captured pictures more accurately

Method used

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  • Image processing method, mobile terminal and computer readable storage medium
  • Image processing method, mobile terminal and computer readable storage medium
  • Image processing method, mobile terminal and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Such as image 3 As shown, the first embodiment of the present invention proposes an image processing method, which includes the following steps:

[0081] S300, by controlling the variable color temperature light box, can shoot gray cards at multiple color temperatures.

[0082] Specifically, in order to make the standard curve drawn according to the gray card shooting more accurate, a variable color temperature light box can be used to perform gray card shooting under more color temperatures and spectra. The variable color temperature light box can set multiple color temperatures according to needs, not just a few fixed color temperatures, so that the captured gray card pictures are more diverse.

[0083] S302. Collect the B / G and R / G values ​​of the captured gray card pictures, and use a regression algorithm to draw a standard curve.

[0084] Specifically, after the gray card pictures are taken under multiple color temperatures and spectra, the B / G and R / G values ​​...

Embodiment 2

[0097] Such as Figure 4 As shown, the second embodiment of the present invention proposes an image processing method. In the second embodiment, steps S400-S406 and S414-S418 of the image processing method are similar to steps S300-S312 in the first embodiment, except that the method further includes steps S408-S412.

[0098] The method includes the following steps:

[0099] S400, by controlling the variable color temperature light box, can shoot gray cards in multiple color temperatures.

[0100] Specifically, in order to make the standard curve drawn according to the gray card shooting more accurate, a variable color temperature light box can be used to perform gray card shooting under more color temperatures and spectra. The variable color temperature light box can set multiple color temperatures according to needs, not just a few fixed color temperatures, so that the captured gray card pictures are more diverse.

[0101] S402. Collect the B / G and R / G values ​​of the cap...

Embodiment 3

[0123] Such as Figure 10 As shown, the third embodiment of the present invention proposes a mobile terminal 2 . The mobile terminal 2 includes a memory 20 , a processor 22 , a camera 26 and an image processing system 28 .

[0124] Wherein, the memory 20 includes at least one type of readable storage medium for storing the operating system installed in the mobile terminal 2 and various application software, such as the program code of the image processing system 28 . In addition, the memory 20 can also be used to temporarily store various types of data that have been output or will be output.

[0125] The processor 22 may be a central processing unit (Central Processing Unit, CPU), controller, microcontroller, microprocessor, or other data processing chips in some embodiments. The processor 22 is generally used to control the overall operation of the mobile terminal 2 . In this embodiment, the processor 22 is configured to run program codes stored in the memory 20 or proces...

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PUM

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Abstract

The invention discloses an image processing method. The method comprises the following steps: shooting a gray card under a plurality of color temperatures by controlling a light box with an adjustablecolor temperature; collecting B / G and R / G values of a shot gray card picture, and drawing a standard curve by using a regression algorithm; obtaining a picture requiring white balance correction; collecting the B / G and R / G values of the picture; performing mapping according to the standard curve to obtain the color temperature corresponding to the picture; querying a gain value corresponding to the color temperature; and accomplishing white balance correction of the picture according to the gain value. The embodiment of the invention further discloses a mobile terminal and a computer readablestorage medium. As a result, the white balance correction can be performed on the shot picture more accurately.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, a mobile terminal and a computer-readable storage medium. Background technique [0002] The traditional white balance method is to use the same camera to shoot gray cards at different color temperatures, collect the B / G and R / G values ​​of the pictures taken, and then set the coordinate values ​​at each color temperature, draw a standard curve, and get The corresponding gain value. When actually taking pictures, the B / G and R / G values ​​of the pictures are also counted, and the corresponding color temperature coordinates are mapped to the counted points according to the standard curve, and the obtained gain value is used to complete the white balance correction. However, this method has certain disadvantages. On the one hand, the color temperature used for shooting gray cards is less, and the standard curve drawn is not accurate enou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/73H04N9/04
CPCH04N23/10H04N23/88
Inventor 崔小辉
Owner NUBIA TECHNOLOGY CO LTD
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