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In this paper, we focus on generating compact but efficient video signatures on mobile devices so that users quickly know whether there are near-duplicates in the social network systems when they upload a video. For this, the proposed method employs the idea of inverted index that is one of the most popular text retrieval methods. Experimental results show that our method can achieve similar results...
Recent years have witnessed an explosion of multimedia contents available online. However, noisy and spam tags provided by spammers dramatically degrade the trust level of Social Networking Service. In this paper, we propose a novel social multimedia tagging system based on a user trust model which exploits the low-level visual features of multimedia contents. Especially, we first analyze the low-level...
For many years, various local descriptors that are insensitive to geometric changes such as viewpoint, rotation, and scale changes, have been attracting attention due to their promising performance. However, most existing local descriptors including the SIFT (Scale Invariant Feature Transform) are based on luminance information rather than color information thereby resulting in instability to photometric...
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