Abstract:

When the hyperspectral and multispectral images are fused, the spectral information of the fused image changed a lot because the spatial resolution is improved and the situation of the mixed pixels is weakened. The pixels change should be considered to solve this shortage. In view of this situation, the multispectral image is used to simulate a hyperspectral image using the method of projection and the wavelet transformation (WT) is used to fuse the simulated and original hyperspectral images. The fused image can not only enhance the spatial information, but also correct the spectral information, and thus can increase the application accuracies such as the environmental abnormal detection. The Hyperion image and the SPOT-5 image are chosen to do the experiment of fusion, 87.2 percent of the target areas can be distinguished when making use of the fused image.

Key words: multispectral/hyperspectral remote sensing images, image fusion, spectrum projection, spectrum similarity, wavelet transform, relatively regional active degrees