Definitions for "Anisotropic Filtering"
This process corrects the projection errors when texture are applied. The texels on the surfaces, oblique from the point of view of the observer, aren't considered any more as square form, but irregular allowing to obtain smoother results.
An advanced texture-filtering technique that improves image quality for scenes with objects that extend from the foreground deep into the background. For example, a road that extends to the horizon will look better with anisotropic filtering.
A mipmap filtering mode that compensates for anisotropic distortion.