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Frontiers of Optoelectronics

ISSN 2095-2759

ISSN 2095-2767(Online)

CN 10-1029/TN

Postal Subscription Code 80-976

Front Optoelec Chin    2011, Vol. 4 Issue (4) : 438-443    https://doi.org/10.1007/s12200-011-0182-5
RESEARCH ARTICLE
Integrations of both high resolution reconstruction and non-uniformity correction of infrared image sequence based on regularized maximum a posteriori
Xiu LIU, Weiqi JIN(), Yan CHEN, Chongliang LIU, Bin LIU
School of Optoelectronics, Beijing Institute of Technology & Key Laboratory of Photo-Electronic Imaging Technology and System, Ministry of Education, Beijing 100081, China
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Abstract

During thermal imaging, it is vital importance to obtain high-performance images that non-uniformity noise in infrared focal plane array (IRFPA) should be eliminatined and the imaging spatial resolution should be improved as far as possible. Processing algorithms related to both of them have been hot topics, and attracted more and more attention of researchers. Considering that both high-resolution restoration algorithm of image sequences and scene-based non-uniformity correction (NUC) algorithm require multi-frame image sequences of target scene with micro-displacement, an integrated processing algorithm of high-resolution image reconstruction and NUC of infrared image sequences based on regularized maximum a posteriori (MAP) is proposed. Results of simulated and experimental thermal image suggested that this algorithm can suppress random noise and eliminate non-uniformity noise effectively, and high-resolution thermal imaging can be achieved.

Keywords infrared image      image sequences      motion estimation      non-uniformity correction (NUC)      maximum a posteriori (MAP) restoration     
Corresponding Author(s): JIN Weiqi,Email:jinwq@bit.edu.cn   
Issue Date: 05 December 2011
 Cite this article:   
Xiu LIU,Weiqi JIN,Yan CHEN, et al. Integrations of both high resolution reconstruction and non-uniformity correction of infrared image sequence based on regularized maximum a posteriori[J]. Front Optoelec Chin, 2011, 4(4): 438-443.
 URL:  
https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0182-5
https://academic.hep.com.cn/foe/EN/Y2011/V4/I4/438
Fig.1  Imaging degradation model of infrared low-resolution image
Fig.2  Experimental results on simulated video. (a) True high-resolution image, 240×320 pixel; (b) simulated frame-one clear low-resolution image, 120×160 pixel; (c) observed frame-one low-resolution image with = 0 and = 25, 120×160 pixel; (d) restored frame using the RMAP-HR&NUC algorithm ( = 0.9737), 240×320 pixel; (e) low-resolution image of (b) using bilinear interpolation ( = 0.9266), 240×320 pixel; (f) low-resolution image of (c) using bilinear interpolation ( = 0.8809), 240×320 pixel
Fig.3  RMSE curves under different non-conformity condition. (a) RMSE curve of reconstructed image ; (b) RMSE curve of offset parameter
Fig.4  Experiment on actual infrared image sequence. (a) Observed frame-one low-resolution infrared image, 200×200 pixel; (b) restored frame-one using bilinear interpolation algorithm, 400×400 pixel; (c) restored frame using RMAP-HR &NUC algorithm for 50 iterations, 400×400 pixel
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[1] Shaosheng DAI,Zhihui DU,Haiyan XIANG,Jinsong LIU. Reconstruction algorithm of super-resolution infrared image based on human vision processing mechanism[J]. Front. Optoelectron., 2015, 8(2): 195-202.
[2] Minghui YANG, Sihai CHEN, Xin WU, Wen FU, Zhangli HUANG. Identification and replacement of defective pixel based on Matlab for IR sensor[J]. Front Optoelec Chin, 2011, 4(4): 434-437.
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