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Proceedings Paper

Motion-compensated frame interpolation for low bit rate video coding considering accelerated motion
Author(s): Peter Csillag; Lilla Boroczky; Kalman Fazekas
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Paper Abstract

In many video coding schemes, especially at low bitrates, a temporal subsampling of the input image sequence is considered. It is realized by skipping images at the transmitter, and these frames must be reconstructed at the receiver side. In order to prevent jerkiness or blurring in the moving areas, motion-compensated interpolation has to be applied. Frame interpolation algorithms usually consider two consecutively transmitted frames and assume constant velocity linear motion between these frames. The algorithm proposed in our paper assumes constant acceleration -- instead of constant speed -- that is estimated based on three consecutively transmitted images and two corresponding motion fields. This approach is much closer to the real situation than the previous methods taking into account only constant speed motion. The proposed interpolation algorithm results in smoother movement in the final interpolated video sequence. Experiments carried out using real-life image sequences confirm the applicability of the proposed method for low and very low bitrate video coding.

Paper Details

Date Published: 17 February 1995
PDF: 9 pages
Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995); doi: 10.1117/12.201190
Show Author Affiliations
Peter Csillag, KFKI Research Institute for Measurement and Computing Techniques (Hungary)
Lilla Boroczky, KFKI Research Institute for Measurement and Computing Techniques (Hungary)
Kalman Fazekas, Technical Univ. of Budapest (Hungary)

Published in SPIE Proceedings Vol. 2451:
Advanced Image and Video Communications and Storage Technologies
Naohisa Ohta; Heinz U. Lemke; Jean Claude Lehureau, Editor(s)

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