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

摘要

A method and apparatus are provided for inserting information into an object and extracting information from the object. The information embedding device can convert the information into a set of at least one point and output a set of at least one point generated by the conversion to the object. The information extraction device can identify a set of at least one point output to the object and extract information from the identified set of at least one point.