Li Xiaowen, male, Han nationality, is a native of Guichi, Anhui Province.
Li established the vegetation di-orientation reflection Li-Strahler geometric optics model and established the base of geometric optics school for study the ground di-orientation reflection. Li initiated the ill-conditioned inversion theory in the field of quantitative remote sensing. On the study of the applicability of the Helmholz reciprocity principle in the area of ground surface remote sensing, he put forward the limitation conditions of Helmholz reciprocity principle for the non-uniform image element di-orientation reflection. With respect to the scale effect of Planck's law in ground surface remote sensing, he set up the conceptual model suitable for non-isothermal surface heat-radiation direction and initiated the scale modifier formula of Planck's law for non-isothermal blackbody plane. He also established the conceptual model of direction and spectrum features of ordinary non-isothermal 3D structural non-blackbody surface heat-radiation in image element scale.