WATERMARK EMBEDDING METHOD BASED IN AN OBJECT OF VIDEO IMAGE, AND RECORDING MEDIUM STORING WATERMARK EMBEDDING PROGRAM

摘要

PURPOSE: A watermark embedding method based in an object of video image, and a recording medium storing watermark embedding program are provided to improve picture quality by inserting a watermark into an extracted object image when reproducing a video image into which the watermark is inserted. CONSTITUTION: One object having the maximal ratio commonly existing in plural frames is set as the object having high correlation(1100). The object images for the target object is respectively extracted from the plural frames(1200). The object images are split so that plural image groups are set(1600). Plural watermark characters are respectively inserted into plural image groups(1700), and the object images are replaced as the object images of plural image groups into which watermark characters are inserted(1800).