| 摘要 |
PROBLEM TO BE SOLVED: To provide a method by which much information is embedded to a texture image doggedly without being sensed by vision, to provide a reading method, and to provide an instrument. SOLUTION: In a first method, particular information is divided by intentional setting of image class which is determined from appearance probability of the amount of features in which local binary pattern (LBP) code is extended and calculated. The divided information is arranged and embedded to a texture image which is formed by a procedural means or image processing. In order to read the information, appearance probability of the amount of features of LBP code is calculated from image data which are acquired by shooting a formed image, corresponding image class is obtained, embedded information which was divided is detected, and decoding is performed from order of location of block. In a second method, forming is performed so that LBP code of a specific pixel in an image may correspond to embedding information, and specific information is embedded. In order to read the information, LBP code of the specific pixel is calculated from photographic image data of a formation image, embedded information is detected, and decoding is performed from order of location of the specific pixel. COPYRIGHT: (C)2007,JPO&INPIT
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