摘要
LED照明技术的发展及其灵活的连续光谱为保持视觉功效的同时实现照明节能提供了新的途径。我们主要针对LED的照度、光谱功率分布(spectral power distribution,SPD)和S/P值对3D人脸表情识别能力的影响,共设置了15种光照环境,包括3种不同SPD的LED光源(HPS、MH、HIGH-SP)、5个照度等级(0.33、1.00、3.33、10.00和30.0 lx)。实验结果和统计分析表明:(1)垂直照度10 lx可以作为行人道路照明最小照度水平的参考阈值;(2)相同照度下具有较高S/P值的LED并不能提高人脸表情的识别效率。我们的研究结果将为行人道路照明的标准制定提供参考。
The development of LED illumination technology and its flexible continuous spectrum provide a new way to achieve energy-saving on lighting whilst maintaining the visual performance. The aim of this paper is to investigate the influence of illumination,spectral power distribution of LED and S/P ratio on the ability of 3 D facial expression recognition. In total,15 lighting conditions were set up,including 3 types of LED light source with different SPDs（ HPS,MH and HIGH-SP） and 5 illuminance levels（ 0. 33,1. 00,3. 33,10. 00 and 30. 0 lx）. The results of experiment and statistical analysis show that：（1） the vertical illumination of 10. 0 lx can be used as a reference threshold for the minimum illuminance level for pedestrian lighting;（2）LED with higher S/P ratio under the same illuminance level will not improve the ability of facial expression recognition. The results will provide both scientific basis and empirical evidence for the guidance and standard for pedestrian lighting.
作者
李天宇
江昕
杨彪
LI Tianyu;JIANG Xin;YANG Biao(School of Architecture,Harbin Institute of Technology Shenzhen,Shenzhen 518000,China)
出处
《照明工程学报》
2018年第4期95-99,115,共6页
China Illuminating Engineering Journal
基金
国家自然科学基金委青年科学基金(批准号:51708152)
深圳市科创委科技研发资金基础研究项目(批准号:JCYJ20170811155435737)
