Mobile visual search via hievarchical sparse coding

Xiyu Yang, Lianli Liu, Xueming Qian, Tao Mei, Jialie Shen, Qi Tian

Research output: Contribution to journalConference articlepeer-review


Mobile visual search is attracting much research attention recently. Existing works focus on addressing the limited capacity of wireless channel yet overlook its instability, thus is not adaptive to the change of channel capacity. In this paper, a novel image retrieval algorithm that is scalable to various channel condition is proposed. The proposed algorithm contains three contributions: (1) to achieve instant retrieval under various channel capacity, we adjust transmission load by sparseness instead of codebook size; (2) we introduce hierarchical sparse coding into our retrieval workflow, where original codebook is transformed into a tree-structured dictionary which implies elements' priority; (3) we propose transmission priority ranking schemes that is adaptive to specific query. Experiment results show that the proposed algorithm outperforms BoW and Lasso based algorithm under different parameter settings. Retrieval results under different channel limitation validate the scalability of our method.

Original languageEnglish
Article number14566607
Pages (from-to)1-6
Number of pages6
JournalProceedings - IEEE International Conference on Multimedia and Expo
Publication statusPublished - 3 Sep 2014
Externally publishedYes
Event2014 IEEE International Conference on Multimedia and Expo, ICME 2014 - Chengdu, China
Duration: 14 Jul 201418 Jul 2014


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