Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision

CORC > 沈阳自动化研究所 > 中国科学院沈阳自动化研究所 > 机器人学研究室

	Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision
	Tian JD(田建东); Duan ZG(段志刚); Ren WH(任卫红); Han Z(韩志); Tang YD(唐延东)
刊名	OPTICS EXPRESS
	2016
卷号	24 期号:7 页码:7266-7286
ISSN号	1094-4087
通讯作者	田建东
产权排序	1
中文摘要	The spectral power distributions (SPD) of outdoor light sources are not constant over time and atmospheric conditions, which causes the appearance variation of a scene and common natural illumination phenomena, such as twilight, shadow, and haze/fog. Calculating the SPD of outdoor light sources at different time (or zenith angles) and under different atmospheric conditions is of interest to physically-based vision. In this paper, for computer vision and its applications, we propose a feasible, simple, and effective SPD calculating method based on analyzing the transmittance functions of absorption and scattering along the path of solar radiation through the atmosphere in the visible spectrum. Compared with previous SPD calculation methods, our model has less parameters and is accurate enough to be directly applied in computer vision. It can be applied in computer vision tasks including spectral inverse calculation, lighting conversion, and shadowed image processing. The experimental results of the applications demonstrate that our calculation methods have practical values in computer vision. It establishes a bridge between image and physical environmental information, e.g., time, location, and weather conditions. (C) 2016 Optical Society of America
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics
研究领域[WOS]	Optics
关键词[WOS]	EARTHS SURFACE ; MIXED REALITY ; MODEL ; PIXEL ; SENSITIVITY
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000373469100041
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/18498]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	Tian JD,Duan ZG,Ren WH,et al. Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision[J]. OPTICS EXPRESS,2016,24(7):7266-7286.
APA	Tian JD,Duan ZG,Ren WH,Han Z,&Tang YD.(2016).Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision.OPTICS EXPRESS,24(7),7266-7286.
MLA	Tian JD,et al."Simple and effective calculations about spectral power distributions of outdoor light sources for computer vision".OPTICS EXPRESS 24.7(2016):7266-7286.