Volume marking with low-frequency

Details Volume marking with low-frequency Volume marking with low-frequency

H - Electricity

04

N

H04N 21/6334 (2011.01)

Patent

CA 2692456

A method and apparatus for embedding watermark data [105] into a data stream [110] using the insertion of low frequency carriers [103] modulated by the watermarked data [105 ]into selected spatio- temporal volumes having equal total luminance values.

L'invention porte sur un procédé et sur un appareil permettant d'incorporer des données de filigrane (105) dans un flux de données (110) en introduisant des porteuses de faible fréquence (103) modulées par les données filigranées (105) dans des volumes spatio-temporels sélectionnés de valeurs de luminance totale égales.

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