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作者:

Zhang, Chunjie (Zhang, Chunjie.) | Cheng, Jian (Cheng, Jian.) | Zhang, Yifan (Zhang, Yifan.) | Liu, Jing (Liu, Jing.) | Liang, Chao (Liang, Chao.) | Pang, Junbiao (Pang, Junbiao.) (学者:庞俊彪) | Huang, Qingming (Huang, Qingming.) (学者:黄庆明) | Tian, Qi (Tian, Qi.)

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EI Scopus SCIE

摘要:

The combination of local features with sparse technique has improved image classification performance dramatically in recent years. Although very effective, this strategy still has two shortcomings. First, local features are often extracted in a pre-defined way (e.g. SIFT with dense sampling) without considering the classification task. Second, the codebook is generated by sparse coding or its variants by minimizing the reconstruction error which has no direct relationships with the classification process. To alleviate the two problems, we propose a novel boosted local features method with random orientation and location selection. We first extract local features with random orientation and location using a weighting strategy. This randomization process makes us to extract more types of information for image representation than pre-defined methods. These extracted local features are then encoded by sparse representation. Instead of generating the codebook in a single process, we construct a series of codebooks and the corresponding encoding parameters of local features using a boosting strategy. The weights of local features are determined by the classification performances of learned classifiers. In this way, we are able to combine the local feature extraction and encoding with classifier training into a unified framework and gradually improve the image classification performance. Experiments on several public image datasets prove the effectiveness and efficiency of the proposed method. (C) 2015 Elsevier Inc. All rights reserved.

关键词:

Boosting Image classification Local feature selection Random orientation Sparse coding

作者机构:

  • [ 1 ] [Zhang, Chunjie]Univ Chinese Acad Sci, Sch Comp & Control Engn, Beijing 100049, Peoples R China
  • [ 2 ] [Huang, Qingming]Univ Chinese Acad Sci, Sch Comp & Control Engn, Beijing 100049, Peoples R China
  • [ 3 ] [Zhang, Chunjie]Chinese Acad Sci, Key Lab Big Data Min & Knowledge Management, Beijing 100049, Peoples R China
  • [ 4 ] [Huang, Qingming]Chinese Acad Sci, Key Lab Big Data Min & Knowledge Management, Beijing 100049, Peoples R China
  • [ 5 ] [Cheng, Jian]Inst Automat Chinese Acad Sci, Natl Lab Pattern Recognit, Beijing, Peoples R China
  • [ 6 ] [Zhang, Yifan]Inst Automat Chinese Acad Sci, Natl Lab Pattern Recognit, Beijing, Peoples R China
  • [ 7 ] [Liu, Jing]Inst Automat Chinese Acad Sci, Natl Lab Pattern Recognit, Beijing, Peoples R China
  • [ 8 ] [Liang, Chao]Wuhan Univ, Sch Comp, Natl Engn Res Ctr Multimedia Software, Wuhan 430072, Peoples R China
  • [ 9 ] [Pang, Junbiao]Beijing Univ Technol, Coll Metropolitan Transportat, Beijing ICey Lab Multimedia & Intelligent Softwar, Beijing, Peoples R China
  • [ 10 ] [Huang, Qingming]Chinese Acad Sci, Inst Comp Technol, Key Lab Intell Info Proc, Beijing 100190, Peoples R China
  • [ 11 ] [Tian, Qi]Univ Texas San Antonio, Dept Comp Sci, San Antonio, TX 78249 USA

通讯作者信息:

  • [Cheng, Jian]Inst Automat Chinese Acad Sci, Natl Lab Pattern Recognit, POB 2728, Beijing, Peoples R China

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来源 :

INFORMATION SCIENCES

ISSN: 0020-0255

年份: 2015

卷: 310

页码: 118-129

8 . 1 0 0

JCR@2022

ESI学科: COMPUTER SCIENCE;

ESI高被引阀值:115

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 12

SCOPUS被引频次: 12

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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