提出了一种多分辨率多模态医学图像配准方法来提高图像的配准速度与精度.利用小波函数对图像进行多层分解,采用改进的Powell优化算法寻找待配准图像间的最大互信(MMI).配准首先从图像金字塔中分辨率最低的0层图像开始,将0层图像配准获得的变形参数作为1层图像配准的起始参数,重复该过程直到完成最高精度层的图像配准.CT/MRI和CT/PET图像配准结果证明基于小波分解的多分辨率配准方法具有避免优化算子陷入局部极值、算子收敛速度快和配准精度高等优点.
参考文献
| [1] | Zitova B,Flusser J.Image registration method:a survey[J].Image and Vision Computing,2003,21(3):977-1000. |
| [2] | Li Shixing,Guan Liang,Zhang Tiange,et al.Rigid registration and fusion between SPECT and MRI/CT based on external fiducial alignment[J].Chinese Journal of Medical Instrumentation(中国医疗器械杂志),2001,25(4):192-195 (in Chinese). |
| [3] | Chen Ming,Chen Wufan.Contour based rigid registration of multimodal medical images[J].Journal of Image and Graphics(中国图象图形学报),1999,3(10):854-857 (in Chinese). |
| [4] | Maes F,Vandermeulen D,Suetens P.Medical image registration using mutual information[C].Proc.of the IEEE,2003,91(10):1699-1723. |
| [5] | Luo Shuqian,et al.Multi-modality medical image registration based on maximization of mutual information[J].Journal of Image and Graphics(中国图象图形学报),2000,5(7):551-558 (in Chinese). |
| [6] | Liu Zhexing,Li Shuxiang.Automatic serial image registration by regional counting in joint-histogram[J].Journal of Image and Graphics(中国图象图形学报),2002,7(5):450-456 (in Chinese). |
| [7] | Peng Jinglin,Zhang Jing,Li Shutao,et al.Medical image registration based on expanded PV interpolation and hybrid optimization algorithm[J].Acta Electronica Sinica(电子学报),2006,34(5):962-965 (in Chinese). |
| [8] | Fu Yili,Yu Xiaolong,Wang Yuehua.Fast algorithm of brain multi-modality image registration based on maximal mutual information[J].Journal of Biomedical Engineering Research(生物医学工程研究),2006,25(2):71-74(in Chinese). |
| [9] | Thevenaz P,Unser M.Optimization of mutual information for multiresolution image registration[J].IEEE Trans.Image Processing,2000,9(12):2083-2099. |
| [10] | Broughton S A.Wavelet based methods in image processing[R].Rose-Hulman Institute of Technology,Winter Quarter,1998. |
| [11] | Powell M J D.An efficient method for finding the minimum of a function of several variables without calculating derivatives[J].Comput.J.,1964,7:155-163. |
| [12] | Tsao J.Interpolation artifacts in multimodality image registration based on maximization of mutual information[J].IEEE Transactions on Medical Imaging,2003,22(7):854-864. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%