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- W2393589683 abstract "In order to achieve digital image copyright protection and authentication,designed double-digital watermarking algorithm based on discrete cosine transform(DCT) and discrete wavelet transform(DWT),a robust watermark for copyright protection,and the other is fragile watermark for image authentication.Two watermark embedded at the same time,embedded in the order do not need to consider,in accordance with the purpose of different verification watermarks can be extracted at the same time or separately.Original pixel matrix by DWT,in the low-frequency sub-image to embed a robust watermark,the level of details sub-image by the discrete cosine transform,fragile watermark embedded in the mid-frequency coefficient.The algorithm is simple,computation of small,well hidden.It can recognise malicious tampering block positioning." @default.
- W2393589683 created "2016-06-24" @default.
- W2393589683 creator A5015894904 @default.
- W2393589683 date "2009-01-01" @default.
- W2393589683 modified "2023-09-24" @default.
- W2393589683 title "Dual Watermarking Algorithm of Image Copyright Protection and Authentication" @default.
- W2393589683 hasPublicationYear "2009" @default.
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