摘要
根据LED发光的物理特性和LED控制系统脉宽调制的驱动方式,构建了线性的LED显示颜色的数学模型,并通过CIE1976LUV色彩空间直接与人眼的视觉感受联系起来。分析了LED的相邻灰度级与相邻颜色的色差在人眼视觉感受中与控制系统精度之间的关系,并结合LED发光的离散性,对控制系统精度需求进行了讨论,给出了基于人眼视觉感受的控制系统精度需求的计算方法。该方法在工业制造前就可以根据人眼的视觉感受特性对LED显示屏的控制系统精度进行优化和设计。
A linear mathematical model is established to describe LED displays＇ colors accor-ding to LED＇s optical characters and the the pulse width modulation method of LED displays＇ control system.Furthermore,the mathematical model is connected with the visual perception in CIE1976LUV color space.This paper analyzed the relationship between visual perception and accuracy requirement of control system when the neighbouring gray levels and neighbouring colors of LEDs are discussed.Moreover,to calculate the control system＇s accuracy according to visual perception,the uniform problems of LED are discussed.This paper gives an algorithm to calculate the systemic accuracy of LED displays based on visual perception.With the algorithm,it is possible to design and optimize the LED displays＇ control system according to visual perception before the LED displays are produced.
出处
《液晶与显示》
CAS
CSCD
北大核心
2012年第3期324-331,共8页
Chinese Journal of Liquid Crystals and Displays
基金
国家科技支撑计划基金项目(No.2009BAE73B01)
关键词
LED显示屏
色差
视觉感受
系统精度
LED displays
color difference
visual perception
systemic accuracy
