White balance adjustment device and white balance adjustment method

Abstract

The invention discloses a white balance adjustment device and a white balance adjustment method. The white balance adjustment method comprises the following steps: obtaining N gray scale signal pictures and three standard monochrome signal pictures of the white balance adjustment device, and collecting white balance data and brightness data of the N gray scale signal pictures and the white balance data of the three standard monochrome signal pictures; deducing a group of monochrome brightness parameter items corresponding to each gray scale signal picture according to the brightness data and chromaticity coordinates of each gray scale signal picture, and the chromaticity coordinates of the three standard monochrome signal pictures; calculating and generating a group of monochrome target curves according to an interpolation algorithm, N groups of monochrome brightness parameter items of all gray scale signal pictures, and preset standard white balance data and a standard gamma value of the white balance adjustment device; and setting and executing new white balance data and a new gamma value according to the white balance data and the gamma values of the monochrome target curves. By adoption of the white balance adjustment device and the white balance adjustment method disclosed by the invention, white balance adjustment can be performed on large-scale color gradation signals.

Description

technical field [0001] The invention relates to the technical field of white balance adjustment, in particular to a white balance adjustment device and a white balance adjustment method. Background technique [0002] In the image quality processing of the equipment to be adjusted, in order to accurately restore the scenes and characters in the picture, and achieve vivid colors and high image quality, the key basis is to select the appropriate standard white, and at the same time ensure the color temperature and white balance of the white balance adjustment device controlled within a reasonable range. The color temperature and white balance of the device to be adjusted are affected by its backlight system, manufacturing process, materials, etc. Even products of the same batch have discrete color temperature and white balance problems. If the white balance is not adjusted, it will seriously affect the image quality performance of the device to be adjusted, and the image quali...

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a white balance adjustment device and a white balance adjustment method, aiming at solving the problem that the white balance adjustment device can only adjust a single color level signal during the white balance adjustment process, resulting in the inability to adjust a wide range of color levels. Technical issues with signal white balance

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