Analysis and study of the interlaced encoding pixels in Hadamard transform spectral imager based on DMD

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

	Analysis and study of the interlaced encoding pixels in Hadamard transform spectral imager based on DMD
	Xu, Jun 1,2; Hu, Bingliang1 ; Feng, Dazheng 3; Fan, Xiaohui 4; Qian, Qingming 1,2
刊名	optics and lasers in engineering
	2012-03-01
卷号	50 期号:3 页码:458-464
关键词	Hadamard transform DMD Spectral imager Interlaced encoding Decoding method
ISSN号	0143-8166
产权排序	1
合作状况	国内
英文摘要	the key innovation in hadamard transform spectral imager (htsi) introduced recently is the use of digital micro-mirror device (dmd) to encode spectral information. however, because the size of individual micro-mirrors does not match the detector pixel size or for other unavoidable errors in the optical design and the system assembling, an interlaced encoding phenomenon appears on some pixels of the encoded images obtained from the detector. these interlaced encoding pixels are not encoded based on hadamard transform, so they should be processed specially in spectrum recovery. this paper analyzes the interlaced encoding phenomenon and proposes a positioning method and a decoding method for the interlaced encoding pixels on the encoded images. in our experiment, we direct a beam of laser into our htsi and fill the entire field of view: by observing the column vector, which is made up of the gray values of a pixel on the encoded images from the detector in sequence, the interlaced encoding pixels can be distinguished easily and a coefficient is obtained simultaneously, which denotes the ratio of the area between the left part and the right part of the interlaced encoding pixel. by substituting the coefficient and the encoded gray values of the interlaced pixel into its encoding equation, we can recover the spectral elements of the interlaced pixel with ease. by comparing the spectral curve of the interlaced encoding pixels recovered by the method mentioned in this paper and the spectral curves of its two adjacent pixels, we find the decoding results are quite effective. (c) 2011 elsevier ltd. all rights reserved.
学科主题	optics
WOS标题词	science & technology ; physical sciences
类目[WOS]	optics
研究领域[WOS]	optics
关键词[WOS]	imaging spectrometer
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000300268600022
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.opt.ac.cn/handle/181661/20240]
专题	西安光学精密机械研究所_光学影像学习与分析中心
作者单位	1.Chinese Acad Sci, Key Lab Spectral Imaging Tech, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Xidian Univ, Natl Lab Radar Signal Proc, Xian 710071, Peoples R China 4.Xi An Jiao Tong Univ, Sch Foreign Studies, Xian 710049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Jun,Hu, Bingliang,Feng, Dazheng,et al. Analysis and study of the interlaced encoding pixels in Hadamard transform spectral imager based on DMD[J]. optics and lasers in engineering,2012,50(3):458-464.
APA	Xu, Jun,Hu, Bingliang,Feng, Dazheng,Fan, Xiaohui,&Qian, Qingming.(2012).Analysis and study of the interlaced encoding pixels in Hadamard transform spectral imager based on DMD.optics and lasers in engineering,50(3),458-464.
MLA	Xu, Jun,et al."Analysis and study of the interlaced encoding pixels in Hadamard transform spectral imager based on DMD".optics and lasers in engineering 50.3(2012):458-464.