| 摘要 |
PROBLEM TO BE SOLVED: To determine that any pieces of content representing the same contents within a certain range are the same content even if they change in format and quality. SOLUTION: A plurality of specific areas of inputted content data are selected as a set of area groups, and data distribution characteristics in each area, which is selected at the area selection step, are digitized. Then, characteristic values are compared for each area in a set of area groups, and specific marks are allocated to the results of the comparisons, and then the marks are outputted as a content characteristic quantity. COPYRIGHT: (C)2007,JPO&INPIT
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