Patent ID: 8600099
Filing Date: 2013-12-03
Classification: G06K,G06T

Abstract:
1. A method of detecting embedded data embedded in a plurality of blocks of image data, said embedded data including identification information unique to said embedded data, and said embedded data being divided into a plurality of divided data each corresponding to one of a plurality of data values, each of said plurality of divided data being respectively embedded into one of a plurality of areas, each of said areas being arranged into a block in a predetermined pattern, the method comprising: the step of identifying each one of said blocks of said image data; the step of detecting said identification information in said blocks; the step of extracting said divided data from each of said blocks; for each area of the predetermined pattern, the step of counting the number of extractions of each of the plurality of data values among the plurality of said blocks; and the step of reconstructing embedded data that is identified by said identification information based on the counted number of extractions; wherein the counting the number of extraction of each of the plurality of data values among the plurality of said blocks is performed for each identification information.