Paper Abstract and Keywords |
Presentation |
2012-02-20 09:20
Dimensionality Reduction of Sparse Visual Features via Recoverable Projection for Large-Scale Image Retrieval Zaixing He, Takahiro Ogawa, Miki Haseyama (Hokkaido Univ.) |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
For a large-scale image database, a main problem with bag-of-features-based image retrieval is the huge memory usage when the visual vocabulary size is large. In this paper, we solve this problem by reducing the dimensionality of the corresponding high-dimensional sparse feature vector via a projection matrix: Permuted Block Diagonal matrix. Then the obtained low-dimensional vector, instead of the original high-dimensional feature vector, is used as a new feature vector for image retrieval. Furthermore, because of the sparse nature, the original high-dimensional feature vector can be recovered when necessary, e.g., reranking the top retrieved images. A fast sparse recovery algorithm, Cross Low-dimensional Pursuit, is used for recovering the high-dimensional feature vector. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Bag of features / recoverable projection / sparse recovery / permuted block diagonal matrix / cross low-dimensional pursuit / / / |
Reference Info. |
ITE Tech. Rep., vol. 36, no. 9, ME2012-39, pp. 1-6, Feb. 2012. |
Paper # |
ME2012-39 |
Date of Issue |
2012-02-13 (HI, ME, AIT) |
ISSN |
Print edition: ISSN 1342-6893 |
Download PDF |
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Conference Information |
Committee |
ME AIT HI IEICE-IE IEICE-ITS |
Conference Date |
2012-02-20 - 2012-02-21 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hokkaido Univ. |
Topics (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
ME |
Conference Code |
2012-02-ME-AIT-HI-IE-ITS |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Dimensionality Reduction of Sparse Visual Features via Recoverable Projection for Large-Scale Image Retrieval |
Sub Title (in English) |
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Keyword(1) |
Bag of features |
Keyword(2) |
recoverable projection |
Keyword(3) |
sparse recovery |
Keyword(4) |
permuted block diagonal matrix |
Keyword(5) |
cross low-dimensional pursuit |
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1st Author's Name |
Zaixing He |
1st Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
2nd Author's Name |
Takahiro Ogawa |
2nd Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
3rd Author's Name |
Miki Haseyama |
3rd Author's Affiliation |
Hokkaido University (Hokkaido Univ.) |
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Speaker |
Author-1 |
Date Time |
2012-02-20 09:20:00 |
Presentation Time |
20 minutes |
Registration for |
ME |
Paper # |
HI2012-1, ME2012-39, AIT2012-1 |
Volume (vol) |
vol.36 |
Number (no) |
no.9 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2012-02-13 (HI, ME, AIT) |
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