1. A method for generating a texture analysis map from spectral image data, comprising: obtaining at least a first energy dependent spectral image volume and a second energy dependent spectral image volume from reconstructed spectral image data, wherein the first and second energies are different; generating a multi-dimensional spectral diagram that maps, for each voxel of the reconstructed spectral image data, a value of the first energy dependent spectral image volume to a corresponding value of the second energy dependent spectral image volume; generating a set of spectral texture analysis weights from the multi-dimensional spectral diagram; retrieving a set of texture analysis functions, which are generated as a function of voxel intensity and voxel gradient value from a co-occurrence matrix histogram; generating the texture analysis map through a texture analysis of the reconstructed spectral image data with the set of texture analysis functions and the set of spectral texture analysis weights; and visually presenting the texture analysis map.