Iterative Manifold Embedding Layer Learned by Incomplete Data for Large-Scale Image Retrieval
Iterative Manifold Embedding Layer Learned by Incomplete Data for Large-Scale Image Retrieval
复制标题
用于大规模图像检索的不完整数据学习的迭代流形嵌入层
DOI:
10.1109/tmm.2018.2883860
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发表时间:
2017-07
影响因子:
7.3
通讯作者:
Xiao Baihua
中科院分区:
文献类型:
--
作者:
Xu Jian;Wang Chunheng;Qi Chengzuo;Shi Cunzhao;Xiao Baihua
Existing manifold learning methods are not appropriate for image retrieval tasks, because most of them are unable to process query images and they have much greater computational cost especially for large-scale database. Therefore, we propose the iterative manifold embedding (IME) layer, of which the weights are learned offline by an unsupervised strategy, to explore the intrinsic manifolds by incomplete data. On the large-scale database that contains 27 000 images, the IME layer is more than 120 times faster than other manifold learning methods to embed the original representations at query time. We embed the original descriptors of database images that lie on manifold in a high-dimensional space into manifold-based representations iteratively to generate the IME representations in an offline learning stage. According to the original descriptors and the IME representations of database images, we estimate the weights of the IME layer by ridge regression. In the online retrieval stage, we employ the IME layer to map the original representation of a query image with an ignorable time cost (2 ms per image). We experiment on five public standard datasets for image retrieval. The proposed IME layer significantly outperforms the related dimension reduction methods and manifold learning methods. Without postprocessing, our IME layer achieves a boost in the performance of state-of-the-art image retrieval methods with postprocessing on most datasets, and needs less computational cost. The code is available at https://github.com/XJhaoren/IME_layer.
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