Study on the Polarization Spectral Image Dehazing

doi:10.3964/j.issn.1000-0593(2017)08-2331-08

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 光学影像学习与分析中心

	Study on the Polarization Spectral Image Dehazing
	Xia Pu1,2 ; Liu Xue-bin1 ; Liu, XB
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2017-08-01
卷号	37 期号:8 页码:2331-2338
关键词	Image Dehazing Spectroscopy Polarization Aerosol
ISSN号	1000-0593
DOI	10.3964/j.issn.1000-0593(2017)08-2331-08
其他题名	偏振光谱图像去雾技术研究
产权排序	1
文献子类	Article
英文摘要	Air pollution has a serious effect on the quality of image, and image taking under hazy weather suffers from poor contrast and resolution. It is of great significance to use the polarimetric spectral information for image dehazing and the research of polarization dehazing for spectral data cube. The data used in this paper was pushbroomed under moderate hazy weather, and original Vis-NIR polarimetric data of 380 similar to 1 000 nm was captured, the original polarimetric images at 450, 550, 650, 750, 850 nm and the dehazed images were studied. The results of the research showed that wavelength had a significant effect on the difference of gray value between targets and background, and both the dynamic range of gray value and the smoothness of histogram were improved after the dehazing process. On average, the image contrast of the far-field targets increased by 5 times. The far-field targets at 450 nm had the lowest contrast, and the dehazing process increased the image contrast by 7.13 times which made the undetectable targets detectable. The far-field targets at 850 nm had the highest contrast, and the dehazing process increased the image contrast by 3.86 times. The dynamic range of histogram of the full image increased to 13.5% to 28.6% from 450 to 850 nm, the dynamic range of histogram of the near-field targets are increased to 33.3% to 44.0%. Based on the analyzation of the possible estimation error, two correction factors were proposed to revise the degree of polarization of the airlight and the intensity of the airlight from an object at an infinite distance, the regularity of the two factors were given to guide the image dehazing process under new conditions. The polarimetric information is obtained through the original data by the Stokes parameters, the dehazing process is based on the polarimetric difference between the air light scattered from the haze particles and the direct light reflected from the objects. The polarization spectral dehazing technique not only expands the application area of the imaging spectrometer, but also provides a new idea for image dehazing.
学科主题	Spectroscopy
WOS关键词	HAZE
WOS研究方向	Spectroscopy
语种	英语
WOS记录号	WOS:000408520400002
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/29245]
专题	西安光学精密机械研究所_光学影像学习与分析中心
通讯作者	Liu, XB
作者单位	1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Spectral Imaging Technol, Xian 710119, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xia Pu,Liu Xue-bin,Liu, XB. Study on the Polarization Spectral Image Dehazing[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2017,37(8):2331-2338.
APA	Xia Pu,Liu Xue-bin,&Liu, XB.(2017).Study on the Polarization Spectral Image Dehazing.SPECTROSCOPY AND SPECTRAL ANALYSIS,37(8),2331-2338.
MLA	Xia Pu,et al."Study on the Polarization Spectral Image Dehazing".SPECTROSCOPY AND SPECTRAL ANALYSIS 37.8(2017):2331-2338.