Walid Alakk, Hussain Al-Ahmad, Alavi Kunhu. A new watermarking algorithm for scanned grey PDF files using DWT and hash function. In 9th International Symposium on Communication Systems, Networks & Digital Signal Processing, CSNDSP 2014, Manchester, UK, July 23-25, 2014. pages 690-693, IEEE, 2014. [doi]
Abstract is missing.