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Fast motion compensated temporal interpolation for video

Authors Wong, Chi-Kong
Au, Oscar C. HKUST affiliated (currently or previously)
Issue Date 1995
Source Proceedings of SPIE - The International Society for Optical Engineering , v. 2501, (2/-), 1995, p. 1108-1118
Summary Recently, MPEG-4 is being formed to study very-low-bit-rate (VLBR) video coding for applications in videotelephony. In this paper, we propose a possible postprocessing technique for VLBR coding. In videophone applications, temporal subsampling is a simple technique which can be combined with other compression schemes to achieve very large compression ratio, so as to satisfy the VLBR requirement. As a result, object motions tend to be jerky and disturbing to the human eyes. To smooth out object motions, we propose a postprocessing technique, motion compensated temporal interpolation (MCTI), to increase the instantaneous decoder frame rate. In MCTI, block-based exhaustive motion search is used to establish temporal association between two reconstructed frames. Both forward and backward searches are used to account for uncovered and newly covered areas properly. With MCTI, we show that one or more frames can be interpolated with acceptable visual quality. After showing the feasibility of MCTI, we propose a fast algorithm FMCTI with reduced computation requirement and negligible performance degradation.
ISSN 0277-786X
ISBN 0-8194-1858-7
Rights Copyright 1995 Society of Photo-Optical Instrumentation Engineers. This paper was published in Visual Communications and Image Processing '95, Lance T. Wu, Editor, Proceedings of SPIE Vol. 2501, p. 1108-1115 (1995) and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distirbution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Language English
Format Conference paper
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