DocumentCode :
2163714
Title :
A lowbit rate vocabulary coding scheme for mobile landmark search
Author :
Ji, Rongrong ; Duan, Ling-Yu ; Chen, Jie ; Yao, Hongxun ; Gao, Wen
Author_Institution :
Inst. of Digital Media, Peking Univ., Beijing, China
fYear :
2011
fDate :
22-27 May 2011
Firstpage :
2316
Lastpage :
2319
Abstract :
We present a low bit rate vocabulary coding scheme in the context of mobile landmark search. Our scheme exploits location cues to boost a compact subset of visual vocabulary, which is discriminative for visual search and incurs low bit rate query for efficient upstream wireless transmission. To validate the coding scheme, we have developed mobile landmark search prototype systems within typical areas including Beijing, New York City, Lhasa, Singapore, and Florence. Our system maintains a single vocabulary in a mobile device, which can be efficiently adapted with the location information of city-scale mobile users. Thus multiple downloading of large vocabulary is completely avoided for normal city tourists. In landmark search domain, we have reported superior performance over the state-of-the art works in compact image descriptors or signatures.
Keywords :
image coding; mobile handsets; vocabulary; city-scale mobile users; low bit rate vocabulary coding scheme; mobile device; mobile landmark search prototype systems; upstream wireless transmission; Boosting; Cities and towns; Encoding; Image coding; Mobile communication; Visualization; Vocabulary; boosting; compact visual descriptor; landmark search; mobile visual search; visual vocabulary;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
ISSN :
1520-6149
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2011.5946946
Filename :
5946946
Link To Document :
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