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.
出处
《电子科技》
2014年第12期131-133,141,共4页
Electronic Science and Technology
关键词
LED显示屏
灰度
反γ校正
查找表
FPGA
LED display screen
gradation
Inverse γcorrection
look-up table
FPGA
