Landmark image retrieval using visual synonyms

Landmark image retrieval using visual synonyms
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DOI:
10.1145/1873951.1874166
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发表时间:
2010-10
期刊:
Proceedings of the 18th ACM international conference on Multimedia
影响因子:
--
通讯作者:
E. Gavves;Cees G. M. Snoek
E. Gavves;Cees G. M. Snoek
中科院分区:
其他
文献类型:
--
作者:
E. Gavves;Cees G. M. Snoek

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本文研究了词袋词汇中视觉词的不连贯问题。与现有的仅基于描述符空间中的贴近度进行单词分配的工作不同,我们专注于识别独立的、遥远的单词对-视觉同义词-仍然可能包含具有相似外观的图像块。为了研究这个问题,我们将重点放在地标图像上,在那里我们可以检查图像几何是否是检测视觉同义词的合适工具。提出了一种地标图像中视觉同义词的提取算法。为了展示视觉同义词的优点,我们进行了两个实验。我们研究了同义词在描述符空间中的贴近性,并展示了视觉同义词在地标图像检索环境中的第一个应用。使用视觉同义词,我们的表现与最先进的水平不相上下,但视觉词汇少了六分之一。
In this paper, we consider the incoherence problem of the visual words in bag-of-words vocabularies. Different from existing work, which performs assignment of words based solely on closeness in descriptor space, we focus on identifying pairs of independent, distant words - the visual synonyms - that are still likely to host image patches with similar appearance. To study this problems we focus on landmark images, where we can examine whether image geometry is an appropriate vehicle for detecting visual synonyms. We propose an algorithm for the extraction of visual synonyms in landmark images. To show the merit of visual synonyms, we perform two experiments. We examine closeness of synonyms in descriptor space and we show a first application of visual synonyms in a landmark image retrieval setting. Using visual synonyms, we perform on par with the state-of-the-art, but with six times less visual words.