Patent ID: 11962733
Assignee: DIGIMARC CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. An apparatus configured for encoding a PDF file with a signal, the PDF file comprising a plurality of elements including an artwork element, said apparatus comprising:
means for disassembling the PDF file to obtain the artwork element;
first means for encoding the artwork element according to a first signal encoding, said first means for encoding yielding a first encoded artwork element;
second means for encoding the artwork element according to a second signal encoding, said second means for encoding yielding a second encoded artwork element;
third means for encoding the artwork element according to a third signal encoding, said third means for encoding yielding a third encoded artwork element;
means for generating a signal robustness score for each of the first encoded artwork element, the second encoded artwork element and the third encoded artwork element;
means for selecting the first encoded artwork element, the second encoded artwork element, or the third encoded artwork element based on generated signal robustness scores, said selecting yielding a selected encoded artwork element;
means for reassembling the PDF file so as to include the selected encoded artwork element instead of the artwork element.