Improved watermark extraction for printed and scanned watermarked document
Conference proceedings article
ผู้เขียน/บรรณาธิการ
กลุ่มสาขาการวิจัยเชิงกลยุทธ์
ไม่พบข้อมูลที่เกี่ยวข้อง
รายละเอียดสำหรับงานพิมพ์
รายชื่อผู้แต่ง: Thongkor K., Amornraksa T.
ผู้เผยแพร่: Hindawi
ปีที่เผยแพร่ (ค.ศ.): 2011
ISBN: 9781457721663
นอก: 0146-9428
eISSN: 1745-4557
ภาษา: English-Great Britain (EN-GB)
บทคัดย่อ
In this paper, we address a problem in the watermark extraction process from the printed and scanned watermarked document. Because the information e.g. text, images, diagrams, etc., printed on the watermarked ready-to-print paper can be considered as noises introduced to the watermarked document, the accuracy of watermark signal extracted from the watermarked document can be improved by removing such noises as much as possible before performing the watermark extraction process. From this fact, we thus propose a new procedure to improve the accuracy of the extracted watermark. Our proposed procedure is efficient and very practical to implement with the existing watermarking scheme. The experimental results show improvements obtained from our proposed procedure. ฉ 2011 IEEE.
คำสำคัญ
printed and scanned watermarked document