| 摘要 |
A document in which a drawing related to an object being imaged appears is retrieved with high accuracy. A partial image of a photograph or a drawing, for example, is acquired in advance from a document having a document structure. Local feature quantities are extracted from the acquired partial image. A document having a strong relationship to the object being imaged is retrieved by comparing local feature quantities acquired from a field-of-view image that has been captured, with the local feature quantities acquired from the partial image. |
