A method and system for classifying images between natural pictures and synthetic
graphics is provided. In embodiments of the invention, a picture/graphic classification
method and system implements one-dimensional color discreteness features, two-dimensional
color discreteness features, or three-dimensional color discreteness features for
image classification of natural pictures and synthetic graphics. In another embodiment
of the invention, a picture/graphic combination classification method and system
implements one-dimensional color discreteness features, two-dimensional color discreteness
features, and/or three-dimensional color discreteness features is used to classify
images between natural picture and synthetic graphic classes.