An Improved Robust and Adaptive Watermarking Algorithm Based on DCT
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2012
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| _version_ | 1876461515410767872 |
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| author | Q. Zhang |
| author_facet | Q. Zhang |
| contents | An Improved Robust and Adaptive Watermarking Algorithm Based on DCT Q. Zhang Y. Li X. Wei Ingeniería DCT chaotic adaptive Watermark robustness This paper proposes an improved watermarking algorithm based on DCT(Discrete Cosine Transform). We carried out the algorithm as described as follows. First, we extended both rows and ranks of the water markby using the proposed method before the embedding stage. After expansion, Sine chaotic system is employed in encrypting thewatermark. In the embedding stage, an effective and adaptive embedding method is proposed toembed the watermark into the blocked DCT coefficients. Experimental results demonstrate that the proposed algorithm in thispaper works well in resisting both geometry attack and noise attack. It also does well in recoveringthe watermark after stego image suffered from JPEG compression. 2012 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47423208010 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.3 Vol.10 |
| format | Artículo científico |
| id | redalyc_47423208010 |
| institution | Redalyc |
| language | en |
| publishDate | 2012 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | An Improved Robust and Adaptive Watermarking Algorithm Based on DCT Q. Zhang Ingeniería DCT chaotic adaptive Watermark robustness An Improved Robust and Adaptive Watermarking Algorithm Based on DCT Q. Zhang Y. Li X. Wei Ingeniería DCT chaotic adaptive Watermark robustness This paper proposes an improved watermarking algorithm based on DCT(Discrete Cosine Transform). We carried out the algorithm as described as follows. First, we extended both rows and ranks of the water markby using the proposed method before the embedding stage. After expansion, Sine chaotic system is employed in encrypting thewatermark. In the embedding stage, an effective and adaptive embedding method is proposed toembed the watermark into the blocked DCT coefficients. Experimental results demonstrate that the proposed algorithm in thispaper works well in resisting both geometry attack and noise attack. It also does well in recoveringthe watermark after stego image suffered from JPEG compression. 2012 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47423208010 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.3 Vol.10 |
| title | An Improved Robust and Adaptive Watermarking Algorithm Based on DCT |
| topic | Ingeniería DCT chaotic adaptive Watermark robustness |
| url | https://www.redalyc.org/articulo.oa?id=47423208010 |