Title
Asymmetric Deep Hashing for Efficient Hash Code Compression
Abstract
Benefiting from recent advances in deep learning, deep hashing methods have achieved promising performance in large-scale image retrieval. To improve storage and computational efficiency, existing hash codes need to be compressed accordingly. However, previous deep hashing methods have to retrain their models and then regenerate the whole database codes using the new models when code length changes, which is time consuming especially for large image databases. In this paper, we propose a novel deep hashing method, called Code Compression oriented Deep Hashing (CCDH), for efficiently compressing hash codes. CCDH learns deep hash functions for query images, while learning a one-hidden-layer Variational Autoencoder (VAE) from existing hash codes. With such asymmetric design, CCDH can efficiently compress database codes only using the learned encoder of VAE. Furthermore, CCDH is flexible enough to be used with a variety of deep hashing methods. Extensive experiments on three widely used image retrieval benchmarks demonstrate that CCDH can significantly reduce the cost for compressing database codes when code length changes while keeping the state-of-the-art retrieval accuracy.
Year
DOI
Venue
2020
10.1145/3394171.3414033
MM '20: The 28th ACM International Conference on Multimedia Seattle WA USA October, 2020
DocType
ISBN
Citations 
Conference
978-1-4503-7988-5
1
PageRank 
References 
Authors
0.35
0
6
Name
Order
Citations
PageRank
Shu Zhao110.35
Dayan Wu2157.33
Wanqian Zhang354.11
Yu Zhou49822.73
Bo Li52610.93
Weiping Wang679.20