1. A method of determining a location of a point of interest comprising the steps of: a) providing an optical detector; b) capturing an image by said optical detector; c) obtaining a position and an orientation of said optical detector; d) identifying at least one coordinates of said point of interest within said image; e) mapping said position of said optical detector and said coordinates of said point of interest in a digital elevation model; and f) determining said location of said point of interest by projecting at least one path from said position of said optical detector through said coordinates of said point of interest in said digital elevation model.