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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/1976
Title: Fast motion compensated temporal interpolation for video
Authors: Wong, Joel Chi-kong
Au, Oscar C.
Keywords: Temporal interpolation
Temporal subsampling
Motion compensation
Pixel decimation
Search area subsampling
Issue Date: 1995
Citation: Visual Communications and Image Processing '95, Lance T. Wu, Editor, Proceedings of SPIE Vol. 2501, p. 1108-1115 (1995)
Abstract: 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.
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.
URI: http://hdl.handle.net/1783.1/1976
Appears in Collections:ECE Conference Papers

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