南京大学学报(自然科学版) ›› 2016, Vol. 52 ›› Issue (4): 705.
聂秀山1,4,王舒婷1,尹义龙2,3*
Nie Xiushan1,4,Wang Shuting1,Yin Yilong2,3*
摘要: 当前信息时代,随着计算机和多媒体技术的发展,在互联网尤其是移动互联网中,因视频数据结构复杂,特征维度高,其存储、传输和检索都面临着巨大的挑战,视频哈希学习是解决上述挑战的重要方法之一,已成为多媒体处理领域的研究热点.现有方法主要是利用视频不同特征构造视频哈希,但不同特征存在关联关系,为充分利用视频不同特征之间的关联关系,克服传统视频哈希编码的局限性,提出一种基于特征融合和曼哈顿量化的视频哈希学习方法.该方法首先提取视频的全局、局部和时域特征,并利用张量分解理论实现不同特征的融合,获取视频融合特征表示.然后使用曼哈顿量化对视频融合特征进行量化学习编码,得到视频哈希序列.与传统视频哈希算法相比,该方法不仅充分利用了多特征之间的关联互助关系,而且对原始视频特征的不同维度分别进行编码,较好的保持了原始特征之间的结构相似性.实验结果显示,该方法具有较好的性能.
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