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Image classification using boosted local features with random orientation and location selection
Zhang CJ(张淳杰); Cheng J(程健); Zhang YF(张一帆); Liu J(刘静); Liang C(梁超); Pang JB(庞俊彪); Huang QM(黄庆明); Tian Q(田奇)
2015
发表期刊Information Sciences
期号310页码:118-129
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.
关键词Sparse Coding Image Classification Random Orientation Boosting Local Feature Selection
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/15381
专题类脑智能研究中心
作者单位1.School of Computer and Control Engineering, University of Chinese Academy of Sciences
2.Key Laboratory of Big Data Mining and Knowledge Management, Chinese Academy of Sciences
3.National Laboratory of Pattern Recognition, Institute of Automation Chinese Academy of Sciences
4.National Engineering Research Center for Multimedia Software, School of Computer, Wuhan University
5.Beijing Key Laboratory of Multimedia and Intelligent Software Technology, College of Metropolitan Transportation, Beijing University of Technology
6.Key Lab of Intell. Info. Process, Institute of Computing Technology, Chinese Academy of Sciences
7.Department of Computer Sciences, University of Texas at San Antonio
推荐引用方式
GB/T 7714
Zhang CJ,Cheng J,Zhang YF,et al. Image classification using boosted local features with random orientation and location selection[J]. Information Sciences,2015(310):118-129.
APA Zhang CJ.,Cheng J.,Zhang YF.,Liu J.,Liang C.,...&Tian Q.(2015).Image classification using boosted local features with random orientation and location selection.Information Sciences(310),118-129.
MLA Zhang CJ,et al."Image classification using boosted local features with random orientation and location selection".Information Sciences .310(2015):118-129.
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