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Fast image copy detection approach based on local fingerprint defined visual words

机译：基于局部指纹定义视觉词的快速图像复制检测方法

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摘要

Recently the methods based on bag-of-visual words have become very popular in near-duplicate retrieval and content identification. However, obtaining the visual vocabulary by quantization is very time-consuming and unscalable to large databases. In this paper, we propose a fast copy detection method which uses local image fingerprints to define visual words. To construct the fingerprint, a 32-bit vector is extracted from the local description and then converted into a number which is used to define the visual word. Then, a histogram intersection is employed to measure the similarity between two images. Since the fingerprint building is of low-complexity, this method is very efficient and scalable to very large databases. Furthermore, the fingerprint-defined visual words are more discriminative and precise than the clustering-defined visual words because the vocabulary size could be large enough while maintaining high efficiency. Visual words with strong discriminability can distinguish copies from similar objects, which can reduce the number of false positives and improve the precision and efficiency. The evaluation shows that our approach significantly outperforms state-of-the-art methods.
机译：近来，基于视觉袋的方法在几乎重复的检索和内容识别中非常流行。但是，通过量化获取视觉词汇非常耗时，并且无法扩展到大型数据库。在本文中，我们提出了一种使用局部图像指纹来定义视觉单词的快速复制检测方法。为了构造指纹，从本地描述中提取32位向量，然后将其转换为用于定义视觉单词的数字。然后，使用直方图相交来测量两个图像之间的相似度。由于指纹构建的复杂度很低，因此该方法非常有效并且可扩展到非常大的数据库。此外，指纹定义的视觉词比聚类定义的视觉词更具判别力和精确度，因为词汇量可能足够大，同时又能保持较高的效率。具有较强可分辨性的视觉单词可以将副本与相似的对象区分开，从而可以减少误报的数量并提高准确性和效率。评估表明，我们的方法明显优于最新方法。

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  • 来源
    《Signal processing》 |2013年第8期|2328-2338|共11页
  • 作者

    Hefei Ling; Lingyu Yan; Fuhao Zou; Cong Liu; Hui Feng;

  • 作者单位

    School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;

    School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;

    School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;

    School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;

    School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Copy detection; Fingerprinting; Near-duplicate retrieval; Visual words; Histogram intersection;

    机译：复制检测;指纹;几乎重复的检索;视觉文字;直方图交集;

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