基于小波理论的IKONOS卫星全色影像和多光谱影像的融合

1999年9月24日发射成功的世界上第一颗商用1m分辨率的卫星IKONOS，具有1m分辨率的全色影像和4m分辨率的多光谱影像，通过对IKONOS1m分辨率的全色影像和4m分辨率的多光谱影像的融合可以获得1m分辨率的多光谱影像，为应用提供理高质量的数据源，基于小波多分辨率分析的MRAGM方法，它适合处理任意整数分辨率之比的融合情况，具有在提高影像空间分辨率的同时又保持色调和饱和度不变的优越性，而实现它的关键是构建具有紧支撑特性的M进制低通尺度函滤波器，本文利用基于四进制小波滤波器的MRAGM算法，成功地把全色影像和多光谱影像进行了融合，结果显示该方法的效果令人满意。

Wavelet Theory Based IKONOS Panchromatic and Multi-spectral Image Fusion

The first commercial satellite IKONOS, launched on Sept. 24, 1999, has 1m resolution panchromatic image and 4m multi spectral image. Via the fusion of panchromatic image and multi spectral image, 1m multi spectral image can be obtained, it provides users with high quality image data. MRAGM algorithm, which is based on wavelet theory, can deal with the image fusion of any integer ration. It enhances the spatial resolution while preserving the spectral characteristic unchanged. The key problem to fuse by MRAGM algorithm is to design K regality M band scale function low pass filter. The paper introduces the IKONOS image fusion by MRAGM algorithm with 4 band wavelets filter. The result shows this method is suitable to fuse IKONOS panchromatic image and multi spectral image.