Spatial statistics of natural-terrain imagery .2. Oblique visible backgrounds and stochastic simulation

摘要

We report on the statistics and simulation of oblique airborne imagery of natural forest in the visible wave band. Statistical correlations in the imagery are characterized by a sharp, nearly exponential, central peak and a correlation tail that falls away much more slowly than exponentially. The histogram is approximately bell shaped in appearance, but the data set fails a rigorous statistical test of the Gaussian hypothesis. Nevertheless, we find that stochastic simulations of Gaussian random fields using the experimental correlation data match the real imagery reasonably well.