High capacity and robust digital image watermarking
Pun C.-M.
Source PublicationNCM 2009 - 5th International Joint Conference on INC, IMS, and IDC
AbstractIn this paper, a robust and high capacity digital image watermarking scheme using discrete cosine transform is proposed. The original image is first segmented into mxn image blocks and each image block is decomposed by discrete cosine transform. Then, the twelve representative DCT coefficients are selected for watermark embedding by adaptive quantization of the selected coefficients. Experimental results show the proposed method is capable of embedding 4096 bits of information in images with dimensions 512 x 512 pixels and is robust to various attacks such as JPEG compression, Gaussian lowpass filter, which outperforms the existing watermarking algorithm. © 2009 IEEE.
KeywordDigital watermarking Discrete cosine transform High capacity Quantization
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Document TypeConference paper
CollectionUniversity of Macau
AffiliationUniversidade de Macau
First Author AffilicationUniversity of Macau
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GB/T 7714
Pun C.-M.. High capacity and robust digital image watermarking[C],2009:1457-1461.
APA Pun C.-M..(2009).High capacity and robust digital image watermarking.NCM 2009 - 5th International Joint Conference on INC, IMS, and IDC,1457-1461.
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