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Deep binary codes for large scale image retrieval
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DOI：10.1016/j.neucom.2016.12.070.png)
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摘要
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Recent studies have shown that image representations built upon deep convolutional layers in Convolutional Neural Networks (CNNs) have strong discriminative characteristics. In this paper, we present a novel and effective method to create compact binary codes (deep binary codes) based on deep convolutional features for image retrieval. Deep binary codes are generated by comparing the response from each feature map and the average response across all the feature maps on the deep convolutional layers. Additionally, a spatial cross-summing strategy is proposed to directly generate bit-scalable binary codes. As the deep binary codes on different deep layers can be obtained by passing the image through the CNN and each of them makes a different contribution to the search accuracy, we then present a dynamic, on-the-fly late fusion approach where the top N high quality search scores from deep binary codes are automatically determined online and fused to further enhance the retrieval precision. Two strengths of the proposed methods are that the generation of deep binary codes is based on a generic model, which does not require additional training for new image domains, and that the dynamic late fusion scheme is query adaptive. Extensive experimental results on well known benchmarks show that the performance of deep binary codes are competitive with state-of-the-art approaches for large scale image retrieval. Moreover, it is shown that the dynamic late fusion scheme significantly enhances the search accuracy. (c) 2017 Elsevier B.V. All rights reserved.
Keyword:
Convolutional neural network
Deep binary codes
Late fusion
Large scale image search
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IF:
6.5
论文数:
2.5W
被引数:
6.5W
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