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Improvement to a Method of Embedding Robust Watermarks into Digital Color Images
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/05/25
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Security
watermarking, copyright protection,
Full Text: PDF(263.4KB)>>
This letter proposes improvement to the previously presented watermarking method which spreads an ID pattern with a random sequence and embeds it throughout the spatial domain of an image. The proposed method can extract embedded watermarks without an original image even from images converted by brightness/contrast conversion, edge-enhancement, posterization and JPEG compression.