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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/10457
Title: Approximation method for interpolating affine parameters in doubling frame rate
Authors: Saranta Ponla
Supatana Auethavekiat
Sukanya Phongsuphap
Mahidol University. Faculty of Information and communication technology
Keywords: Approximation methods;Image reconstruction;Interpolation;Signal processing;Electronic mail;Video sequences;Motion estimation;Computational efficiency
Issue Date: 2009
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.
Description: International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2009, page 383 - 386
URI: http://repository.li.mahidol.ac.th/dspace/handle/123456789/10457
metadata.dc.identifier.url: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5383822&isnumber=5383749
Appears in Collections:ICT-Proceeding Document

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