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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/27468
Title: Approximation method for interpolating affine parameters in doubling frame rate
Authors: Saranta Ponla
Supatana Auethavekiat
Sukanya Phongsuphap
Mahidol University
Chulalongkorn University
Keywords: Computer Science;Engineering;Social Sciences
Issue Date: 1-Dec-2009
Citation: ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. (2009), 383-386
Abstract: The quality of the frame rate up-conversion depends on the accuracy of the motion parameters. 2D affine model describes the motion better than the popular 2D translation model; however, its parameters are difficult to interpolate. In this paper, the approximation method for interpolating the mid-point of 2D affine parameters is proposed. The affine transform is approximated as the 2D rigid transformation where the target x and y axes are not orthogonal. Trigonometry relationship is applied to interpolate rotational parameters. Conventional linear interpolation is applied to interpolate translational parameters. For video sequences containing complex motion, the reconstruction from the approximated affine parameters gave higher PSNR and visually better result than the one from the interpolated 2D translation parameters. ©2009 IEEE.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77949888335&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/27468
Appears in Collections:Scopus 2006-2010

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