Nobuaki Matozaki

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In the TRECVID Instance Search (INS) task, it is known that use of BM25, which is an improvement of the TFIDF,greatly improves retrieval performance. Its calculation, however, requires tremendous amount of computational cost and this fact makes its use intractable. In this paper, we present its efficient computational method. Since the BM25 is obtained by(More)
We have participated in the Content-based Copy Detection task. Our purpose for participation is to examine the performance of our image recognition method in the video retrieval. Our image recognition method utilizes local features directly, and achieves the high-speed processing, and high accuracy. We submitted 4 runs as follows. • IMP.m.balanced.Uvote :(More)
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