Volume 32 Issue 08
Aug.  2006
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Guo Xingwang, Gao Gongchen, . Infrared image sequence processing based on singular value decomposition[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(08): 937-940. (in Chinese)
Citation: Guo Xingwang, Gao Gongchen, . Infrared image sequence processing based on singular value decomposition[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(08): 937-940. (in Chinese)

Infrared image sequence processing based on singular value decomposition

  • Received Date: 08 Oct 2005
  • Publish Date: 31 Aug 2006
  • The raw thermal images acquired in infrared thermographic nondestructive testing(IT NDT) usually have low signal-to-noise ratio(SNR) and temperature contrast. In order to restrain the bad effects of noise, singular value decomposition(SVD) technique was used in infrared image sequence processing to yield high defect contrast for digital images reconstructed in IT NDT and to improve the flaw detectivity, and its validity was illustrated by examples. The principle of SVD was introduced. The SVD method was used to process the infrared image sequences obtained in experiments. The image processing effect was quantitatively evaluated by SNR. The research indicates that SVD has the ability of extracting the algebra characteristics which reflect the underlying structural flaw in a sample. It can remove the uneven heating effect and increase the SNR of images, and the defect location in images doesn′t affect the practical efficacy of SVD. Thus SVD is an effective method for IR digital image sequence processing in IT NDT.

     

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  • [1] 郭兴旺,刘颖韬,郭广平,等. 脉冲相位法及其在复合材料无损检测中的应用[J].北京航空航天大学学报,2005,31(10):1049-1053 Guo Xingwang, Liu Yingtao, Guo Guangping, et al. Pulsed phase thermography and its application in the NDT of composite materials[J]. Journal of Beijing University of Aeronautics and Astronautics,2005,31(10):1049-1053(in Chinese) [2] Bison P G,Bressan C,Cavaccini G,et al. NDE of composite materials by thermal method and shearography Wurzbach R N, Burleigh D D. Proc SPIE. Bellingham,WA:SPIE,1997,3056:220-229 [3] Zalameda J N, Rajic N, Winfree W P.A comparison of image processing algorithms for thermal nondestructive evaluation Cramer K E, Maldague X P. Proc SPIE. Bellingham,WA:SPIE, 2003,5073:374-385 [4] 郭兴旺,邵威,郭广平,等. 红外无损检测加热不均时的图像处理方法[J].北京航空航天大学学报,2005,31(11):1204-1207 Guo Xingwang, Shao Wei, Guo Guangping, et al. Image processing algorithms for uneven heating in infrared thermographic NDT[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005,31(11):1204-1207(in Chinese) [5] Andrews H C, Patterson C L. Singular value decompositions and digital image processing[J]. IEEE Trans Acoust Speech Signal Process,1976,ASSP-24(1):26-53 [6] 张贤达. 矩阵分析与应用[M]. 北京:清华大学出版社,2004:341-400 Zhang Xianda. Matrix analysis and application[M]. Beijing:Tsinghua University Press, 2004:341-400(in Chinese) [7] 韩於羹. 应用数理统计[M]. 北京:北京航空航天大学出版社,2002:337 Han Yugeng. Application mathematical statistic[M]. Beijing:Beijing University of Aeronautics and Astronautics Press, 2002:337(in Chinese)
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