一种LED显示屏的γ校正方法  

A Method for γ Correction of LED Display Screen

作　　者：聂佰玲[1] 

机构地区：[1]南京信息职业技术学院电子信息学院,江苏南京210046

出　　处：《电子科技》2014年第12期131-133,141,共4页Electronic Science and Technology

摘　　要：针对因CRT与LED的光电特性差异,造成LED显示屏灰度畸变的问题,基于人眼视觉特性研究了适合于LED光电特性和视觉亮度特性的校正公式,介绍了一种基于查找表的γ校正设计方法,给出了在FPGA内部γ校正功能的实现方法,文中所设计的校正方法,使LED显示屏显示出更佳的图像效果。The gray scale distortion of LED display screen results from the difference between optical and elec- trical characteristic property. The gray scale correction formula suitable for photo-electrical characteristics of LED and visual bright characteristics are studied based on human visual characteristics, and a method for T correction based on look-up table is introduced. The realization of γ correction inside FPGA is given. LED display screens a- chieve better image effect by the proposed correction method.

关 键 词：LED显示屏 灰度 反γ校正 查找表 FPGA 

分 类 号：TN873[电子电信—信息与通信工程]