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Neighborhood Discriminant Hashing for Large-Scale Image Retrieval

Neighborhood Discriminant Hashing for Large-Scale Image Retrieval

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Neighborhood Discriminant Hashing for Large-Scale Image Retrieval

 With the proliferation of large-scale community contributed images, hashing-based approximate nearest neighbor search in huge databases has aroused considerable interest from the fields of computer vision and multimedia in recent years because of its computational and memory efficiency. In this paper, we propose a novel hashing method named neighborhood discriminant hashing (NDH) (for short) to implement approximate similarity search. Different from the previous work, we propose to learn a discriminant hashing function by exploiting local discriminative information, i.e., the labels of a sample can be inherited from the neighbor samples it selects. The hashing function is expected to be orthogonal to avoid redundancy in the learned hashing bits as much as possible, while an information theoretic regularization is jointly exploited using maximum entropy principle. As a consequence, the learned hashing function is compact and nonredundant among bits, while each bit is highly informative. Extensive experiment are carried out on four publicly available data sets and the comparison results demonstrate the outperforming performance of the proposed NDH method over state-of-the-art hashing techniques.


 


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  • Model: PROJ5292
  • 999 Units in Stock
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This product was added to our catalog on Thursday 15 September, 2016.

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