一种户外全彩LED显示屏亮度色度检测新方法

A new detection method for brightness and chroma of outdoor full color LED display screen

本文针对户外全彩LED显示屏的亮度和色度检测,提出了一种基于数字图像处理技术的检测新方法。首先对采集的LED显示屏图像进行预处理;然后通过水平与垂直投影来确定LED像素点的位置及亮度、色度的计算区域;最后记录亮度和色度不一致的LED像素点,以便进行后续校正。实验表明,该检测方法可实现对户外全彩LED显示屏亮度和色度的检测及后续的校正,大大提高LED显示屏的检测速度和显示质量。

In this paper,to detect the brightness and chroma for outdoor full color LED display screen,a new method based on the image processing technology has been found.Firstly,it preprocessed the grabbed image.Then vertical and horizontal projection was used to fix the location of LED pixels and the calculating region of brightness and chroma.At last,it recorded the LED pixel with the inconsistent value of brightness and chroma.The experiment shows that the detection method is able to obtain an efficient result,effectively supports the follow-up correction of brightness and chroma,greatly improves the display quality and enhances the detection speed significantly.