The present invention provides a method and apparatus for visually presenting the access frequency of a two dimensional image. The method includes the steps of: determining which defined regions of the image are accessed; determining the frequency that the plurality of defined regions is accessed; creating...http://www.google.de/patents/US6075535?utm_source=gb-gplus-sharePatent US6075535 - Method and apparatus for visualizing the tile access frequencies for tiled, multi-resolution images