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- 2016
一种基于H.264预测模式的数字栅格地图数据隐藏算法
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Abstract:
针对数字栅格地图数据网络分发中安全高效的需求,提出了一种基于H.264/AVC的数据隐藏算法。首先,结合H.264帧内编码特点,根据方向近似性对H.264视频4×4亮度块的9种帧内预测模式进行分组;然后,在分析当前块所采用的预测模式和数字栅格地图数据特征的基础上,建立数字栅格地图数据和预测模式之间的映射关系,根据此映射关系实现数字栅格地图数据的隐藏。实验结果表明,该方法有效降低了数据嵌入引起的视频失真强度,限制了视频位率的增加;嵌入和提取方法简单快速,保证了数字栅格地图数据网络分发的效率和安全性
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