| Autor: |
Kun XIE, Hai-hong ZHENG, Ping ZENG, Tao GUO |
| Jazyk: |
čínština |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Tongxin xuebao, Vol 35, Pp 153-161 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
1000-436X |
| DOI: |
10.3969/j.issn.1000-436x.2014.12.018 |
| Popis: |
A robust halftone image watermarking method was proposed.The method was developed in parity domain based on pixel block.Especially,the parity sum of a pixel block was defined by comparing the average of the pixel block with an image-dependent threshold.By altering the pixel block's parity based on noise-balanced block error diffusion,watermark was spread into the host image.Watermark was retrieved by employing each pixel block's parity and majority voting strategy,not referring to the original image.Compared with the state-of-the-art method in parity domain,the re-sults indicate that the proposed method has high watermark rate and watermark rate flexibility.Moreover,it is capable of extracting watermark directly from the attacked watermarked image without quantizing it into a halftone image.And it can achieve high robustness against common attacks and print-and-scan attack of different types of printers and scanners. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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