摘要
显色指数(Ra)是目前评价光源显色性的重要指标,光源的显色指数偏低则表示某些颜色在该光源照射下会出现失真。特殊显色指数(R9)是对饱和红色(4.5R 4/13)的显色能力,研究表明R9的大小对于皮肤以及衣服等颜色还原具有十分重要的影响,因此R9也是影响电视图像质量的重要因素之一。通过主观评价和客观测量,对几种不同光源照射下的实景物体和视频图像色彩还原能力开展测试与评价工作,研究成果将为国家标准《体育场馆照明设计及检测标准》(JGJ 153)的修订提供重要技术依据。
The color rendering index （CRI） is a quantitative measure of the ability of a light source to reveal the colors of various objects faithfully in comparison with an ideal or natural light source. Meanwhile, strong reds are prevalent in skin tones and clothes, the appearance of which play an important role on visual environment quality, so the special color rendering index R9 is a critical factor influencing the television picture quality. In this research, we carried out subjective evaluation and objective measurement for the color difference of several visual targets between reference light source and tested light sources with different CRI, and the color reproduction of these targets＇ pictures taken under the above mentioned scenes were also appraised. The result of this research provides technical basis for the revision of Standard for Lighting Design and Test of Sports Venues.
出处
《照明工程学报》
2015年第4期11-17,共7页
China Illuminating Engineering Journal
关键词
显色性
色差
主观评价
电视转播
光源
color rendering
color difference
subjective evaluation
television broadcasting
light source
