Image fusion with additive multiresolution wavelet decomposition. Applications to SPOT+Landsat images

摘要: A technique based on multiresolution wavelet decomposition was developed for the merging and data fusion of a high-resolution panchromatic image low-resolution multispectral image. The standard methods may not be satisfactory, because they can distort spectral characteristics data. method presented here consists adding coefficients to (low-resolution) More specifically, we add high-order transform intensity component (L) is thus an improvement intensity–hue–saturation (IHS or LHS) mergers. An alternative approach correcting red–green–blue also discussed. We used merge SPOT Landsat Thematic Mapper images (SPOT means Systeme pour l’Observation de la Terre). clearly better than IHS LHS mergers preserving both spatial information.