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Accelerating Local Feature Extraction Using Two Stage Feature Selection and Partial Gradient Computation

  • Keundong Lee
  • Seungjae Lee
  • Weon-Geun Oh
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9010)

Abstract

In this paper, we present a fast local feature extraction method, which is our contribution to ongoing MPEG standardization of compact descriptor for visual search (CDVS). To reduce time complexity of feature extraction, two-stage feature selection, which is based on the feature selection method of CDVS Test Model (TM), and partial gradient computation are introduced. The proposed method is examined on SIFT and compared to SIFT and SURF extractor with the previous feature selection method. In addition, the proposed method is compared to various feature extraction methods of the current CDVS TM 11 in CDVS evaluation framework. Experimental results show that the proposed method significantly reduces the time complexity while maintaining the matching and retrieval performance of previous work. For its efficiency, the proposed method has been integrated into CDVS TM since \(107^{\text {th}}\) MPEG meeting. This method will be also useful for feature extraction on mobile devices, where the use of computational resource is limited.

Keywords

Feature Selection Time Complexity Memory Usage Feature Selection Method Feature Extraction Method 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work was supported by the ICT R& D program of MSIP/IITP. [2014(R2012030111), Development of The Smart Mobile Search Technology based on UVD(Unified Visual Descriptor)]

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  1. 1.ETRIDaejeonRepublic of Korea

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