CASIA OpenIR  > 模式识别国家重点实验室  > 多媒体计算与图形学
A new discriminative coding method for image classification
Yang, Xiaoshan1,2; Zhang, Tianzhu1,2; Xu, Changsheng1,2; Xu CS(徐常胜)
AbstractThe bag-of-words (BOW) based methods are widely used in image classification. However, huge number of visual information is omitted inevitably in the quantization step of the BOW. Recently, NBNN and its improved methods like Local NBNN were proposed to solve this problem. Nevertheless, these methods do not perform better than the state-of-the-art BOW based methods. In this paper, based on the advantages of BOW and Local NBNN, we introduce a novel locality discriminative coding (LDC) method. We convert each low level local feature, such as SIFT, into code vector using the Local Feature-to-Class distance other than by k-means quantization. After coding, sum-pooling combined with SPM is used to construct a single feature representation vector for each image. Extensive experimental results on several challenging benchmark datasets show that our LDC method outperforms six state-of-the-art image classification methods.
KeywordBag-of-words Feature Coding Discriminative Image Classification
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaComputer Science
WOS SubjectComputer Science, Information Systems ; Computer Science, Theory & Methods
WOS IDWOS:000350213300002
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorXu CS(徐常胜)
Affiliation1.National Lab of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences
2.China Singapore Inst Digital Media, Singapore 139951, Singapore
Recommended Citation
GB/T 7714
Yang, Xiaoshan,Zhang, Tianzhu,Xu, Changsheng,et al. A new discriminative coding method for image classification[J]. MULTIMEDIA SYSTEMS,2015,21(2):133-145.
APA Yang, Xiaoshan,Zhang, Tianzhu,Xu, Changsheng,&徐常胜.(2015).A new discriminative coding method for image classification.MULTIMEDIA SYSTEMS,21(2),133-145.
MLA Yang, Xiaoshan,et al."A new discriminative coding method for image classification".MULTIMEDIA SYSTEMS 21.2(2015):133-145.
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