期刊文献+

以H.264为载体的隐秘传输方法

Secret transmission method of taking H.264 as carrier
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摘要 提出了一种H.264视频在流媒体环境下的隐秘传输方法。该方法将秘密信息分段备份,用哈希函数置乱分段及备份的嵌入顺序,当秘密信息由于丢帧而损失时,用备份信息来恢复损失的秘密信息。数位信息隐藏算法将信息嵌在I帧的4'4子块亮度DCT系数,改变7个中频系数中1个奇偶性嵌入3比特信息。实验表明,该方法在一定丢包率下能有效恢复损失的秘密信息,适合于流媒体应用环境。 This paper proposes a secret transmission method aiming at streaming media application based on H.264 video.Secret message and its backup are divided into blocks and embedded into the video in hashing order,so the lost secret block can be recovered by its backup.Using digital-position based embed method,in each selected 4×4 block of I frame,3 secret bits can be embedded into 7 qualified DCT coefficients,with one changing its parity.The experiment shows a prefect result with good imperceptibility and recovery of lost secret message when loss rate is low.
出处 《计算机工程与应用》 CSCD 北大核心 2010年第24期98-100,共3页 Computer Engineering and Applications
关键词 H.264 数位信息隐藏 丢帧 恢复 H.264 digital-position based embed frame loss recovery
作者简介 徐玲(1985-),女,硕士生,主要研究领域为多媒体信息隐藏等; 程义民(1945-),男,教授,博士生导师,主要研究领域为汁算机视觉,信息隐藏等; 谢春辉(1983-),博士研究生,主要研究领域为多媒体信息隐藏及隐藏分析等。
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参考文献9

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二级参考文献5

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