A New Robust Watermark Embedding into Wavelet DC Components
نویسندگان
چکیده
منابع مشابه
Watermark Embedding into Wavelet DC Components
A watermarking scheme is presented to embed watermarks into wavelet DC components. The DC area is not suitable for embedding watermark because of severe visual degradation. To overcome degradation problem, we embed watermark into visually insensitive locations. To detect visually insensitive locations, we perform medianfiltering to the lowest frequency sub-band of wavelet transform. The robustn...
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Watermarking technique provides the possibility for copyright protection. Discrete cosine transform (DCT) is the most popular tool used in watermarking algorithm. But the watermarking algorithm based on DCT is not the most ideal choice in terms of the complexity and robustness. All phase discrete cosine biorthogonal transform (APDCBT) owns the characteristics of high frequency attenuation and g...
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Both watermark structure and embedding strategy affect robustness of image watermarks. Where should watermarks be embedded in discrete cosing transform (DCT) domain in order for the invisible image watermarks to be robust? Though many papers in the literature agree that watermarks should be embedded in perceptually significant components, dc components are explicitly excluded from watermark emb...
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ژورنال
عنوان ژورنال: ETRI Journal
سال: 2002
ISSN: 1225-6463
DOI: 10.4218/etrij.02.0202.0502