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Fast and Accurate Algorithm for Motion Estimation in Mobile Environments

모바일 환경에서 모션 추정을 위한 빠르고 정확한 알고리즘

  • 김준호 (전북대학교 컴퓨터공학부) ;
  • 오일석 (전북대학교 컴퓨터공학부)
  • Received : 2009.11.10
  • Accepted : 2009.11.26
  • Published : 2010.03.28

Abstract

In this paper, we propose a new method of improving accuracy of motion estimation in mobile environments, compared with Rosten's algorithm. The present method selects corners as feature points. The Rosten's algorithm uses simple addition and subtraction to detect the corners. Although it has the advantage of faster processing speed, Rosten's algorithm has a drawback of low performance in motion estimation. We use the NCC(Normalized Cross Correlation) coefficients to match the corners, and remove in two steps the outliers of inaccurate matching corners. We compare the proposed algorithm with Rosten's algorithm by applying both to the real images. We find that the proposed method shows better performance than Rosten's algorithm in motion estimation. In addition, we implement the present method on mobile devices and confirm that it works in mobile environments in real time.

Keywords

Mobile Interaction Technique;User Interface;Motion Estimation

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