| 基于QR码的瓦片遥感影像数字水印算法 |
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| 引用本文： | 林威,王玉海,任娜,郑小雪.基于QR码的瓦片遥感影像数字水印算法[J].武汉大学学报(信息科学版),2017,42(8):1151-1158. |
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| 作者姓名： | 林威 王玉海 任娜 郑小雪 |
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| 作者单位： | 1.南京师范大学虚拟地理环境教育部重点实验室, 江苏 南京, 210046 |
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| 基金项目： | 国家自然科学基金41301413江苏省自然科学基金BK20130903国家社会科学基金11 & ZD162 |
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| 摘 要： | 针对瓦片遥感影像数据，提出一种基于快速响应矩阵码（quick response code，QR code）的强鲁棒性盲水印算法。算法的设计充分顾及了瓦片遥感影像的数据特征，将包含版权认证信息的QR码水印图像进行数据压缩和预处理，有效降低了嵌入数据量；通过在水印嵌入单元和水印信息位之间建立稳定的映射关系确保水印信息的可靠嵌入；采用改变像素值位平面统计特征的方法实现对含水印瓦片遥感影像的快速定位。最后，对所提算法进行了试验验证。结果表明，QR码的引入有效提升了水印信息容量，所提算法对于常规图像处理操作和拼接攻击具备良好的保真度和鲁棒性，可实际应用于瓦片遥感影像数据的版权保护。
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| 关 键 词： | QR码 瓦片遥感影像 数字水印 鲁棒性 |
| 收稿时间： | 2015-12-10 |
QR Code Based Research on Digital Watermarking Algorithm for Tile Remote Sensing Image |
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| Affiliation: | 1.Key Laboratory of Virtual Geographic Environment of Ministry of Education, Nanjing Normal University, Nanjing 210046, China2.College of Transportation and Civil Engineer, Fujian Agriculture and Forestry University, Fuzhou 350002, China |
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| Abstract: | A blind watermarking algorithm which has strong robustness based on quick response (QR) code for tile remote sensing image was presented. Considering the data feature of tile remote sensing image fully, QR code image which contains the information of copyright authentication is compressed and pretreated in order to reduce the quantity of embedded data effectively. The watermark is embedded reliably based on building a stable mapping relationship between the watermark embedding units and the information bits. The method which changes the statistical characteristics of bit-plane of the pixel value can achieve fast positioning of tile remote sensing image which contain watermark. Finally, the proposed algorithm is validated by test. The result proved that QR code effectively enhances the capacity of watermark information, and the proposed algorithm has good fidelity and robustness to common image processing operations and mosaic attacks, which can be used to protect the copyright of tile remote sensing image. |
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