Large-Scale Aerial Image Categorization Using a Multitask Topological Codebook

IEEE Transactions on Cybernetics
Luming ZhangXuelong Li

Abstract

Fast and accurately categorizing the millions of aerial images on Google Maps is a useful technique in pattern recognition. Existing methods cannot handle this task successfully due to two reasons: 1) the aerial images' topologies are the key feature to distinguish their categories, but they cannot be effectively encoded by a conventional visual codebook and 2) it is challenging to build a realtime image categorization system, as some geo-aware Apps update over 20 aerial images per second. To solve these problems, we propose an efficient aerial image categorization algorithm. It focuses on learning a discriminative topological codebook of aerial images under a multitask learning framework. The pipeline can be summarized as follows. We first construct a region adjacency graph (RAG) that describes the topology of each aerial image. Naturally, aerial image categorization can be formulated as RAG-to-RAG matching. According to graph theory, RAG-to-RAG matching is conducted by enumeratively comparing all their respective graphlets (i.e., small subgraphs). To alleviate the high time consumption, we propose to learn a codebook containing topologies jointly discriminative to multiple categories. The learned topological codebook guides t...Continue Reading

References

Jul 15, 2005·IEEE Transactions on Pattern Analysis and Machine Intelligence·Yakov Keselman, Sven Dickinson
Mar 16, 2007·IEEE Transactions on Pattern Analysis and Machine Intelligence·Antonio TorralbaWilliam T Freeman
May 30, 2012·IEEE Transactions on Pattern Analysis and Machine Intelligence·Radhakrishna AchantaSabine Süsstrunk
Oct 13, 2012·IEEE Transactions on Cybernetics·Qi WangXuelong Li
Oct 17, 2012·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Luming ZhangChun Chen
Jun 13, 2013·IEEE Transactions on Cybernetics·Li LiuXuelong Li
Jul 31, 2013·IEEE Transactions on Cybernetics·Chenping HouYi Wu
Aug 6, 2013·IEEE Transactions on Cybernetics·Ling ShaoXuelong Li
Aug 21, 2013·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Luming ZhangQi Tian
Nov 5, 2013·IEEE Transactions on Cybernetics·Luming ZhangDeng Cai
Jun 22, 2014·IEEE Transactions on Cybernetics·Lin ChenXuelong Li
Sep 10, 2015·IEEE Transactions on Pattern Analysis and Machine Intelligence·Zhigang MaAlexander G Hauptmann

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Citations

Feb 6, 2016·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Wei WangNicu Sebe
Jul 11, 2018·IEEE Transactions on Cybernetics·Xiao SunZhenguang Liu

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