Image Coding System based on Vector Representation with Charactors and Halftone Dots

Images containing characters, line drawings, and halftone dots are displayed on many panels which has different resolutions. Resolution conversion of images is mandatory technique to adjust different resolutions. We have proposed to convert raster representation into vector representation. In this paper, we assume an input image is a comic image because it is in great demand for contents, and then we describe a comic image coding system. This system separates the input image into characters, line drawings, and halftone dots. We show a block diagram of the system and describe elemental techniques. Evaluation experiments are done by implementation for PDA.