INFORMATION INSERTION METHOD, INFORMATION EXTRACTION METHOD, AND INFORMATION EXTRACTION APPARATUS USING DOT-BASED INFORMATION ROBUST TO GEOMETRIC DISTORTION

摘要

An information insertion method, an information extraction method, and an information extraction apparatus using dot-based information are provided herein. The information extraction apparatus includes an identification unit and an extraction unit. The identification unit identifies a set of at least one dot output to a target. The extraction unit extracts information from the set of at least one dot.