Double-camera picture pick-up system and white balance adjustment method and device thereof

Abstract

The invention discloses a double-camera picture pick-up system and a white balance adjustment method thereof, and relates to a picture pick-up system and a white balance adjustment method thereof. The double-camera picture pick-up system comprises a main camera and an auxiliary camera, wherein the main camera acquires a main picture, and the auxiliary camera acquires an auxiliary picture with a scene that is different from that of the main picture; and the main picture is subjected to white balance adjustment according to a white balance adjustment gain value obtained by the auxiliary picture. The white balance adjustment method disclosed by the invention comprises the following steps of acquiring the auxiliary picture through the auxiliary camera, and performing white balance adjustment on the main picture acquired by the main camera according to the white balance adjustment gain value obtained by the auxiliary picture. When the main camera is used for picking up a pure-color scene, the main camera is subjected to white balance adjustment by taking a white region in the picture acquired by the auxiliary camera as a white balance adjustment reference region, so that the probability of color shift caused in the process of picking up the pure-color scene can be greatly reduced.

Description

technical field [0001] The invention relates to a dual-camera camera system and a method for adjusting white balance thereof. The method is completed by establishing a functional module framework and controlling a computer system by computer program instructions, and these computer program instructions are stored in a computer-readable storage medium. Background technique [0002] White balance is an index that describes the accuracy of red (R), green (G), and blue (B) three primary colors mixed to form white. The basic concept of white balance is that white can be restored to white under any light source. The color cast that occurs when shooting under a light source can be compensated by strengthening the corresponding complementary color, which is white balance adjustment. When the white balance is adjusted accurately, changing the color and brightness of the display screen will not affect the purity of white, that is, there will be no color cast. [0003] In recent year...

AI Technical Summary

Problems solved by technology

When using a mobile phone to take pictures, the usual method of white balance adjustment in the current mobile phone camera application is to identify the area with the highest brightness in the picture captured by the camera as a white area, and then use the R value, G value, and B value of this area to adjust the white balance. Calibrate the R value, G value and B value of other areas in the picture as a reference (the R value, G value and B value are all average values). This method has a common problem, using a single camera to shoot solid color scenes It is very easy to have white balance error, which will lead to the color cast of the whole picture

The reason for this problem is that when shooting a pure color scene, it is difficult to find or there is no white area in the whole screen, so the above-mentioned color cast will appear in other positions of the screen when the point in the screen is used as the reference point for white balance adjustment to calibrate other positions of the screen. question

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