| 摘要 |
A system and method for tracing an electronic document within a publication. A message is associated with the electronic document as an identification thereof. The binary representation of the message is encoded as a mark defining a drawing arrangement of geometrical shapes which encode the message in the glyph of the mark e.g. a simple text, a single character, a geometrical shape etc. or in the glyph of a single character then used as a mark. The mark is added to the electronic document to generate a traceable document having the message as identification within the publication. The mark is provided at a specific location with respect to the borders and/or center of the traceable document. The traceable document thus created is added to the publication. To track the document, the publication is sent to an electronic scanner module implementing a hook. The hook searches for the geometrical shapes representing the message in the mark. When found, the mark allows for obtaining positional information about the document including position in page, page number, width, length, X/Y ratio etc. |
