Fusion of Multispectral and Panchromatic Satellite Images in Environmental Issues

Image fusion of multispectral and panchromatic satellite image is used to combine spatial detail of the panchromatic image of high spatial resolution and spectral information of multispectral image of low resolution, in order to create a synthetic multispectral high-resolution image. This process is called pansharpening and the resulting image, has among others, improved visual quality and visual interpretation capabilities. These improvements are particularly useful in studying environmental issues. A large number of fusion techniques have been developed at various levels. This paper includes a critical consideration of certain fusion techniques at pixel level, as well as a relevant example of panchromatic and multispectral satellite image fusion of satellite Landsat 8.