全彩色LED显示屏真彩色显示技术研究

该文研究了在全彩色ＬＥＤ显示系统中应用基色转换技术实现图像的真彩色显示。由于彩色ＬＥＤ显示屏所选用的三基色与电视系统三基色在光谱特性上有着较大差别，同一颜色在２个不同的色度系统中，其三刺激值必然不同。为了真实地再现视频图像信息，ＲＧＢ信号在送给彩色ＬＥＤ显示屏之前必须进行基色变换处理。文中叙述了基色转换的方法，并针对实际系统给出其彩色校正矩阵及其硬件实现。实验结果表明，通过校正处理能有效地减小颜色再现色差，提高图像的视觉质量。

Study on True-color Display Technique for Full-color LED Display Screen

Based on the theory of primary color transformation,truecolor display technique for LED display screen with RGB three primary colors is put forward in this paper.Since the spectrum property of the three primary colors used in the color LED display screen has a great difference from that of the color television system,the same color has different tristimulus values in the two different three primary colors chrominance systems.In order to reproduce the original video image objectively,the RGB signals must be processed with color switching method before sending to the LED display screen.In the paper,the color switching method is described in detail.The color correction matrix for a system and its hardware implementation is also presented.The experiment result indicates that the chromatic aberration can be effectively decreased after color correction,and the display image quality is improved.