| 摘要 |
PROBLEM TO BE SOLVED: To provide an originality assurance technique by which image alteration is not determined when digital image data simply have undergone, e.g., rotation, enlargement or reduction without any substantial change in contents. SOLUTION: An information processing apparatus includes: a calculator which calculates the feature value of image data, the feature value being unchangeable when the image data rotate; and a validation data generator which generates, based on the feature value calculated by the calculator, validation data to validate alteration on the image data. COPYRIGHT: (C)2010,JPO&INPIT |
