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双能透照模式下涡轮叶片DR图像融合方法

杨民 吴美金 魏东波 李兴东

杨民, 吴美金, 魏东波, 等 . 双能透照模式下涡轮叶片DR图像融合方法[J]. 北京航空航天大学学报, 2011, 37(12): 1494-1497.
引用本文: 杨民, 吴美金, 魏东波, 等 . 双能透照模式下涡轮叶片DR图像融合方法[J]. 北京航空航天大学学报, 2011, 37(12): 1494-1497.
Yang Min, Wu Meijin, Wei Dongbo, et al. Turbine blade DR images fusion based on bi-energy X-ray radiography[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1494-1497. (in Chinese)
Citation: Yang Min, Wu Meijin, Wei Dongbo, et al. Turbine blade DR images fusion based on bi-energy X-ray radiography[J]. Journal of Beijing University of Aeronautics and Astronautics, 2011, 37(12): 1494-1497. (in Chinese)

双能透照模式下涡轮叶片DR图像融合方法

基金项目: 国家自然科学基金资助项目(60872080,61077011); 国家科技支撑项目(2011BAI02B02)
详细信息
  • 中图分类号: TP 391.4

Turbine blade DR images fusion based on bi-energy X-ray radiography

  • 摘要: 为了提高单帧涡轮叶片DR(Digital Radiography)图像的信息量,首先在2个不同射线能量下对涡轮叶片进行DR成像,以获取不同厚度区域的质量信息;然后将2幅DR图像进行多分辨率小波分解,以最大局部方差为准则对二者的低频子带图像进行融合,以局部梯度的活性因子为尺度对二者的高频子带图像进行融合;最后基于小波融合系数的逆变换获得最终的融合结果.实验结果表明:基于此方法的涡轮叶片融合DR图像携带了更为丰富的细节信息,从而有利于叶片质量信息的快速、准确判读.

     

  • [1] Yuan Xunhua,Drangova Maria,Pollmann Steve,et al.Comparison of a digital flat-panel x-ray image intensifier and conventional film-screen system for radiostereometric analysis (RSA) //Proceedings of SPIE-The International Society for Optical Engineering.Bellingham,WA:SPIE,2004,5368(2):914-921 [2] Samei E,Flynn M J.An experimental comparison of detector performance for computed radiography systems[J].Med Phys,2002,29(4):447-459 [3] 孔凡琴,路宏年.基于DR的航空发动机涡轮叶片的缺陷尺寸测量[J].兵工学报,2005,26(3):335-338 Kong Fanqin,Lu Hongnian.The measuration to the defection on the turbine-vane of the aeroengine based on the digital radiography[J].Acta Armamentarii,2005,26(3):335-338(in Chinese) [4] Song Yu,Li Mantian,Li Qingling,et al.A new wavelet based multi-focus image fusion scheme and its application on optical microscopy //2006 IEEE International Conference on Robotics and Biomimetics.Piscataway,NJ:IEEE,2006:401-405 [5] Townsend D W,Beyer T,Blodgett T M.PET/CT scanners: A hardware approach to image fusion[J].Semin Nucl Med,2003,33(3):193-204 [6] 杨霈,董秋影,杨民.基于小波变换的双能DR图像融合[J].无损检测,2008,30(7):430-433 Yang Pei,Dong Qiuying,Yang Min.Bi-energy DR image fusion based on wavelet transform[J].Nondestructive Testing,2008,30(7):430-433(in Chinese) [7] 孙延奎.小波分析及其应用[M].北京:机械工业出版社,2005:77-89 Sun Yankui.Wavelet analysis and its applications[M].Beijing:China Machine Press,2005:77-89(in Chinese) [8] 董秋影.射线数字图像融合与拼接技术研究[M].北京:北京航空航天大学机械工程及自动化学院,2007 Dong Qiuying.The research of X-ray digital image fusion and stitching[M].Beijing:School of Mechanical Engineering and Automation,Beijing University of Aeronautics and Astronautics,2007(in Chinese) [9] Iella G.A general framework for multi-resolution image fusion:from pixels to regions[J].Information Fusion,2003,3(4):259-280 [10] De I,Chanda B.A simple and efficient algorithm for multi-focus image fusion using morphological wavelets[J].Signal Processing,2006,86(5):924-936 [11] Pu T,Ni G.Contrast-based image fusion using the discrete wavelet transform[J].Optical Engineer,2000,39(8):2075-2082
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出版历程
  • 收稿日期:  2010-07-27
  • 刊出日期:  2012-12-30

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