17. The method of claim 16 , wherein the providing a set of rules further comprises forming the rules, including: obtaining a set of accuracy levels describing human behavior in color naming, and deriving rules whereby color names and each accuracy level include at least one of: a hue descriptor, a combination of brightness modifiers, and a saturation modifier.
16. The method of claim 2 , wherein the using the region color names to describe the color composition of the scene at different accuracy levels further comprises: providing a set of rules defining accuracy levels in color naming, selecting an accuracy level meeting an application desire, and computing a histogram of color names for the scene, for the selected accuracy level.