AN IMAGE WATERMARKING METHOD BASED ON THE SINGULAR

路人甲也有人爱 25 0 PDF 2019-07-17 15:07:10

ArobustimagewatermarkingschemeinwhichabinaryimageisembeddedinthesingularvaluesofselectedDWTblocksinthehorizontalandverticalsub-bandsofa1-leveldecompositionofagray-scaleimageisproposed.Theembeddedblocksareselectedbyasecretkeytoenhanceimperceptibility.Awatermarkedimagethatisperceptu

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