| 摘要 |
<p>The method involves indexing a file to precede recognition of an original structure and pages of the file, and extracting a portion of alphanumeric information contained in the file. A structured digital data file is produced and organized by piece. The electronic information is calculated based on the extracted portion of the information. A seal is set according to the associated electronic information. An original file is modified by incorporation of the visible and/or invisible seal to a human eye in a form, which preserves the format interpretable by a printer. An independent claim is also included for a computer program comprising a set of instructions for performing a method for post-processing an original file interpretable by a printer.</p> |
