计算机科学 ›› 2017, Vol. 44 ›› Issue (6): 266-269.doi: 10.11896/j.issn.1002-137X.2017.06.046
谢秋莹,易本顺,柯祖福,李卫中
XIE Qiu-ying, YI Ben-shun, KE Zu-fu and LI Wei-zhong
摘要： 针对融合规则带来的虚假边缘、伪影等问题,提出了改进拉普拉斯能量和(Sum-modified Laplacian,SML)和脉冲耦合神经网络(Pulse Coupled Neural Network,PCNN)相结合的非下采样Contourlet变换(Non-Sampled Con-tourlet Transform,NSCT)域融合方法。首先,采用NSCT将每幅源图像分解成包含基本信息的低频子带图像和多幅包含细节信息的带通子带图像。然后,计算各尺度分解图像的SML值,根据值的大小对低频子带图像各像素点进行像素选择。对于带通子带部分,将计算的SML作为PCNN的输入激励,PCNN输出的点火映射图用来选择各子带图像的像素值。最后,将处理后的各子带系数进行NSCT重构得到融合图像。实验结果表明,此算法能很好地改善融合图像的聚焦清晰度,并且与现有的SIDWT,DTCWT,NSCT以及基于PCNN的融合方法相比,所提算法在互信息量、结构相似度以及边缘信息保留量等客观指标方面得到了提高。
| [1] YU L S,WEN G J,LI Z Y.Remote Sensing Image Fusion Algorithm Based on Shift Invariance Discrete Wavelet Transform[J].Computer Engineering,2011,37(17):197-199.(in Chinese) 余连生,文贡坚,李智勇.基于SIDWT的遥感图像融合算法[J].计算机工程,2011,37(17):197-199. [2] YANG Y C,DANG J W,WANG Y P.A Medical Image Fusion Method Based on Lifting Wavelet Transform and Adaptive PCNN[J].Journal of Computer-Aided Design & Computer Gra-phics,2012,24(4):494-499.(in Chinese) 杨艳春,党建武,王阳萍.基于提升小波变换与自适应PCNN的医学图像融合方法[J].计算机辅助设计与图形学学报,2012,24(4):494-499. [3] TU C P,XIAO J S,DU K H,et al.Multi-focus Image Fusion Algorithm Based on the Anisotropic Thermal Diffusion Equation[J].Acta Electronica Sinica,2015,43(6):1192-1199.(in Chinese) 涂超平,肖进胜,杜康华,等.基于各向异性热扩散方程的多聚焦图像融合算法[J].电子学报,2015,43(6):1192-1199. [4] ROCKINGER O.Image Sequence Fusion Using a Shift-invariant Wavelet Transform[C]∥Proceedings of IEEE International Conference on Image Processing.IEEE,1997:288-291. [5] HILL P,CANAGARAJAH N,BULL D.Image Fusion usingComplex Wavelets[C]∥13th British Machine Vision Confe-rence.UK,2002:487-496. [6] DA CUNHA A L,ZHOU J P,DOMINH N.The Nonsubsampled Contourlet Transform:Theory,Design and Applications[J].IEEE Transactions on Image Processing,2006,15(10):3089-3101. [7] QU X B,YAN J W,XIAO H Z,et al.Image Fusion Algorithm Based on Spatial Frequency-Motivated Pulse Coupled Neural Networks in Non-subsampled Contourlet Transform Domain[J].Acta Automatica Sinica,2008,34(12):1508-1514. [8] LI X E,REN J Y,LV Z M,et al.Fusion Method of Multispectral and Panchromatic Images Based on Improved PCNN and Region Energy in NSCT Domain[J].Infrared and Laser Engineering,2013,42(11):3096-3102.(in Chinese) 李新娥,任建岳,吕增明,等.NSCT域内基于改进PCNN和区域能量的多光谱和全色图像融合方法[J].红外与激光工程,2013,42(11):3096-3102. [9] JIANG Z.Image Fusion Algorithm Based on PCNN and NSCT Transform[D].Hangzhou:Zhejiang Sci-Tech University,2014.(in Chinese) 姜志.基于PCNN和NSCT变换的图像融合算法[D].杭州:浙江理工大学,2014. [10] SUN X L,WANG Z Y,FU Y Q,et al.Fast Image Fusion Based on Sum of Modified Laplacian[J].Computer Engineering and Applications,2015,51(5):193-197.(in Chinese) 孙晓龙,王正勇,符耀庆,等.基于改进拉普拉斯能量和的快速图像融合[J].计算机工程与应用,2015,51(5):193-197. |
| No related articles found! |
|
||
首页