White balance parameter determination method, white balance adjustment method and device, storage medium and terminal

Abstract

Disclosed are a white balance parameter determination method, a white balance adjustment method and device, a storage medium and a terminal. The white balance parameter determination method comprisesthe steps of: acquiring an original image shot by a shooting device under each color temperature category; calculating a red mean and a blue mean of each original image; under each color temperature category, determining a red adjustment value according to the difference between the red mean of the original image and a red mean of a standard device, and determining a blue adjustment value according to the difference between the blue mean of the original image and a blue mean of the standard device; and under each color temperature category, determining a final red adjustment value by using thered adjustment value and a preset red adjustment value in a preset parameter table, and determining a final blue adjustment value by using the blue adjustment value and a preset blue adjustment valuein the preset parameter table, the final red adjustment value and the final blue adjustment value under each color temperature category forming a final parameter table. The technical solution can achieve the consistency of color performance between devices after white balance adjustment.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a white balance parameter determination method, a white balance adjustment method and device, a storage medium, and a terminal. Background technique [0002] Generally speaking, the color of light reflected by an object depends on the color of the light source. The human brain can detect and correct such color changes, so the human eye can adapt to such color changes whether in sunlight, cloudy weather, indoor incandescent or fluorescent lighting, without affecting the whiteness that people see object. However, as far as the digital image capture device is concerned, the "white" produced by different light sources is still not the same in color. For example, photos taken under tungsten light (bulb) lighting may have a yellowish cast, while photos taken under other circumstances may have a blue or red cast. In order to be close to human vision, the digital imag...

AI Technical Summary

Problems solved by technology

[0004] However, only one set of parameters is used for white balance adjustment in the prior art. When the hardware differences of different devices are relatively large, the color performance of different devices will be quite different in the same environment. For example, in the same scene , with a reddish image on one device and a bluish image on the other

Using the same set of parameters to adjust the white balance leads to inaccurate white balance correction and affects the imaging effect

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