GRAPHIC IMAGE GENERATION AND CODING

摘要

A method for generating and coding graphic images for transmission to hand-held or mobile devices uses an object-component technique wherein images are composed from a limited set of component types, particularly points and polygons. Images are encoded as a list of objects to be drawn, with each object specified by a command word (FIG. 3) followed by one or more coordinate words (FIG. 4) locating that object in a fixed coordinate image field. The command word indicates the object outline colour (c), the type of object (CC), and whether it is selectable (s) by a user for interactive applications. Parameter bits (p) in the command word indicate point radii or the number of polygon vertices. With a particular type (CC) setting, text strings may be included in the image.