摘要
通过对RGB三基色发光二极管(LED)温度特性的测试和分析发现,随着环境温度的变化,每种基色的LED亮度与常温时的亮度相比都会发生一定程度的偏移,且其偏移量不相同,导致了图像白场平衡的失真。为了校正失真,针对每个基色LED提出一种不同环境温度下的Gamma补偿曲线,使RGB三基色LED在环境温度变化时具有相同的亮度偏移值,以保证白场平衡。本文提出的Gamma补偿技术克服了LED的温度特性引起显示屏图像的色彩失真和白场平衡的破坏,使图像的色彩不会受环境温度的变化而失真。
It was found the brightness of each primary color LED device has changed with the change of temperature. The different brightnesses result in the distortion of white balance of the image. To correct the distortion,this paper presents Camma compensation at variant temperature for each primary color LED device, offset, thus ensuring the white balance. The Gamma compensation technique has overcome image color distortion resulted from the variant temperature.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2008年第1期125-127,共3页
Journal of Optoelectronics·Laser
基金
国家创新基金资助项目(0202621121(0540))
