The new dual-texture G distribution for single-look PolSAR data

A new form of G distribution, called the dual-texture G distribution, is proposed for Single-Look Complex (SLC) PolSAR data. Unlike the scalar texture productmodel, the dual texture G distribution is derived considering different texture variables for co-pol and cross-pol (x-pol) channels. The co-pol and x-pol texture variables are modelled by the Generalized Inverse Gaussian (GIG) distribution, separately. The result is a more flexible multivariate distribution. Also Mellin Kind Statistics (MKS) are utilized to analyze GIG textures, observe evidence of dual texture and to estimate shape parameters.