一种基于H.264预测模式的数字栅格地图数据隐藏算法

发布时间：2018-09-10 18:33

【摘要】：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。
[Abstract]:A data hiding algorithm based on H.264/AVC is proposed to meet the requirements of security and efficiency in the distribution of digital raster map data network. Firstly, according to the characteristics of H.264 intra coding, 9 intra prediction modes of 4 脳 4 luminance blocks of H.264 video are grouped according to the directional approximation, and then, based on the analysis of the prediction mode and the digital raster map data features used in the current block, The mapping relationship between the digital raster map data and the prediction pattern is established, and the hiding of the digital raster map data is realized according to the mapping relationship. Experimental results show that the proposed method can effectively reduce the intensity of video distortion caused by data embedding and limit the increase of video bit rate, and the embedding and extraction method is simple and fast, which ensures the efficiency and security of digital grid map data distribution.
【作者单位】：信息工程大学地理空间信息学院;
【基金】：国家自然科学基金(41401462)~~
【分类号】：P208

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