National Invention Award / 111209a
2011/12/09 "Method of watermark with hybrid halftone dots" ( ROC (Taiwan) Patent I298231; US Patent 7,554,699 B2. Inventors: Wang, Hsi-Chun; Hsiao, Pei-Chi; Lien, Chi-Ming. Assignee: National Taiwan Normal University) won the Gold Medal in 2011 National Invention Award.
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