The white balance algorithm of LED display is an algorithm or technical method to ensure that the LED display can accurately and consistently display white under different light source conditions.
White balance plays a vital role in the display effect of LED display, which directly affects the accuracy and authenticity of the displayed color.
The following is a detailed introduction to the white balance algorithm of LED display:
Definition of white balance
White balance refers to the accuracy and consistency of the white displayed by the LED display under different light source conditions. The correct white balance can ensure that the displayed white is not biased, pure, and consistent under different brightness. This is achieved by adjusting the brightness ratio of the three primary colors of red (R), green (G), and blue (B).
The core of the white balance algorithm
The core of the white balance algorithm is to accurately control the brightness ratio of the three colors of RGB to achieve the ideal white display effect. This usually involves the following steps:
1. Color sampling: First, the algorithm will sample the colors of multiple pixels on the LED display to obtain the RGB color values in the current display state.
2. Color analysis: Then, the algorithm will analyze these sampled data to determine the color deviation in the current display state. In particular, pay attention to whether the white is blue or yellow-green.
3. Brightness ratio adjustment: According to the analysis results, the algorithm will adjust the brightness ratio of the three colors of RGB. Ideally, when the light intensity of the three colors of RGB is equal, the color presented by the display should be pure white. However, due to the characteristics of LED pixels, their luminous intensity and color may change due to factors such as temperature and service life, so real-time adjustment is required through the algorithm.
4. Feedback and optimization: After the adjustment is completed, the algorithm will sample and analyze the color again to verify the adjustment effect. If there is still a deviation, continue to optimize and adjust until the ideal white balance state is achieved.
Application of white balance algorithm
White balance algorithm is crucial in the application of LED display screens. Through precise white balance adjustment, the accuracy and authenticity of the display effect can be ensured, and the viewing experience and user satisfaction can be improved. Especially in some occasions with high requirements for color reproduction, such as studios, exhibition halls, museums and other places, the accuracy of the white balance algorithm directly affects the quality of the display effect and the audience's viewing experience.
Implementation of white balance algorithm
There are many ways to implement white balance algorithm, but most of them rely on advanced image processing technology and control algorithms.
Some high-end LED displays also use a dedicated color management system (CMS) to achieve more sophisticated white balance adjustment.
These systems usually have a higher degree of automation and intelligence, and can automatically adjust white balance parameters according to different application scenarios and light conditions to ensure the stability and consistency of the display effect.
Summary
The white balance algorithm of LED display is an important algorithm or technical method to ensure that the display can accurately and consistently display white under different light conditions.
It adjusts and optimizes the white balance by precisely controlling the brightness ratio of the three RGB colors, thereby improving the quality of the display effect and the user's viewing experience. With the continuous advancement and development of image processing technology and control algorithms, the application prospects of LED display white balance algorithms will be broader and brighter.