CT and MRI Image Fusion Based on Contourlet Using a Novel Rule
- Resource Type
- Conference
- Authors
- Chai, Yong; He, You; Ying, Chaolong
- Source
- 2008 2nd International Conference on Bioinformatics and Biomedical Engineering Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on. :2064-2067 May, 2008
- Subject
- Bioengineering
Computing and Processing
Computed tomography
Magnetic resonance imaging
Image fusion
Multiresolution analysis
Filter bank
Aerospace engineering
Image sensors
Sensor fusion
Laplace equations
Wavelet analysis
- Language
- ISSN
- 2151-7614
2151-7622
Contourlet can efficiently represent image and be used as image fusion method. When fusion scheme is selected, fusion performance mainly rests on fusion rules. Fusion rules based on region energy is often used in multiresolution analysis (MRA) image fusion scheme. It is more robust and less sensitive to noise. But small region window is often not the best one, and large window blurs the gap between edges and none edges. This paper proposed a novel fusion rule based on weighted region energy. Each pixel in the window has a weight in inverse proportion to the distance between it and the current fusion pixel. And this rule is applied to both lowpass and bandpass coefficients of contourlet transform. Experiments show that the new fusion scheme has better performance than the fusion methods based on traditional region.