Research on Multi-spectral and Panchromatic Image Fusion

A Non-negative Matrix Factorization (NMF) based multi-spectral and panchromatic images fusion algorithm is proposed. The low-resolution multi-spectral image and high-resolution panchromatic image are seen as the sources in NMF decomposition process. In which, the feature basis, contains overall characteristics of source image, is obtained using NMF decomposition. Then, perform histogram matching to high-resolution image and the first feature basis, and replace the first feature basis with the result. Finally, by employing feature basis to conduct reconstruction, the fused image not only possesses high spatial resolution but preserves spectral information of multi-spectral image. The experimental results reveal that our proposed method is superior to other mentioned approaches either in subjective visual effect or objective criteria.