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基于非亚采样Contourlet变换的PET/CT图像融合
引用本文:刘迎辉,姜威,魏戈.基于非亚采样Contourlet变换的PET/CT图像融合[J].光学技术,2010,36(1).
作者姓名:刘迎辉  姜威  魏戈
作者单位:山东大学,信息科学与工程学院,济南,250100
摘    要:提出了一种新的基于非亚采样Contourlet变换的PET/CT图像融合方法。通过非亚采样金字塔(NSP)和非亚采样方向滤波器组(NSDFB)实现对图像的多尺度多方向分解。在融合处理中,对分解图像所得的高频及低频系数,根据不同分解面的特性,采用不同的加权规则进行融合。该方法既保留了Contourlet变换方法的多分辨率特性,又具有平移不变性。实验结果表明,相对于传统的拉普拉斯金字塔变换法、小波变换法和Contourlet变换法等,取得了更佳的融合效果。

关 键 词:图像融合  非亚采样Contourlet变换  多分辨率  平移不变性

PET/CT image fusion based on nonsubsampled contourlet transform
LIU Ying-hui,JIANG Wei,WEI Ge.PET/CT image fusion based on nonsubsampled contourlet transform[J].Optical Technique,2010,36(1).
Authors:LIU Ying-hui  JIANG Wei  WEI Ge
Institution:School of Information Science and Engineering;Shandong University;Jinan 250100;China
Abstract:A novel PET/CT images fusion method based on nonsubsampled contourlet transform(NSCT) is presented,which uses the nonsubsampled pyramids(NSP) and the nonsubsampled directional filter banks(NSDFBs) to decompose the source images in a multi-direction way.Like the contourlet transform method,the presented method can obtain multi-scale and multi-direction images with good multi-resolutions,and it is also shift-invariant.The high and low frequency-coefficients are obtained by decomposing the source images with n...
Keywords:image fusion  nonsubsampled contourlet transform  multi-resolutions  shift-invariant  
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