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1. 发明授权

US06983057B1 Methods for embedding image, audio and video watermarks in digital data 失效
标题翻译：将图像，音频和视频水印嵌入数字数据的方法
公开(公告)号：US06983057B1
公开(公告)日：2006-01-03
申请号：US09701809
申请日：1998-06-01
申请人： Anthony Tung Shuen Ho , Siu Chung Tam
发明人： Anthony Tung Shuen Ho , Siu Chung Tam
IPC分类号： G06K9/00
CPC分类号： G06T1/0035 , G06T2201/0052 , G10L19/018 , G11B20/00884 , H04N1/32154 , H04N1/32165 , H04N1/32176 , H04N5/913 , H04N9/8042 , H04N9/8047 , H04N19/467 , H04N2005/91335 , H04N2201/3233 , H04N2201/327 , H04N2201/328 , H04N2201/3283
摘要： A method for embedding an entire image, audio or video watermark sequence within another image, audio or video data sequence with minimum loss of data quality is presented. The method exploits the de-correlation property of data coefficients in the orthogonal transform domain, similar to the application in data compression through transform coding. The present invention describes the usage of a Discrete Cosine Transform as the embedding domain. However, other orthogonal transforms such as Fourier, Walsh-Hadamard, Haar, Sine and Wavelet can also be used for this operation. A unique key derived adaptively from spatial locations registering the thresholds of the ac transform energies is used to unlock or de-watermark the embedded image or audio sequence. Moreover, an exponential filter has been developed to compress and expand the watermark coefficients prior to the embedding and retrieval process. The method can be used in resolving multimedia copyright protection issues arising on the Internet and in the music industry, such as the inclusion of a company's logo or an artist's recorded voice. The method can also be incorporated as a built-in feature for digital recording devices, such as still and video cameras, as well as more recent devices such as VCD and DVD players. Moreover, the method can be applied to the commercial and service sectors, where security in transmission and reception of private information in terms of speech or image is of the utmost importance.
摘要翻译：提出了一种将图像整体，音频或视频水印序列嵌入另一图像，数据质量损失最少的音频或视频数据序列的方法。该方法利用正交变换域中数据系数的去相关属性，与通过变换编码的数据压缩中的应用相似。本发明描述了使用离散余弦变换作为嵌入域。然而，其他正交变换，如傅立叶，沃尔什 - 哈达玛，哈尔，正弦和小波也可以用于此操作。用于自动地从注册交流变换能量的阈值的空间位置导出的唯一密钥用于解锁或去嵌入嵌入的图像或音频序列。此外，已经开发了一种指数滤波器来在嵌入和检索过程之前压缩和扩展水印系数。该方法可用于解决互联网和音乐行业产生的多媒体版权保护问题，例如包括公司标志或艺术家录制的声音。该方法还可以作为诸如静止和摄像机之类的数字记录设备的内置特征以及诸如VCD和DVD播放器的更新的设备。此外，该方法可以应用于商业和服务部门，其中私人信息在言语或图像方面的传输和接收的安全性是至关重要的。

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