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Title: Fast motion estimation for video resolution down-conversion using spatial-variant filter
Authors: Wong, Wai Chuen
Au, Oscar C.
Keywords: Motion estimation
Motion vectors
Video resolution
Spatial-variant filters
Issue Date: 1999
Citation: Proceedings of the 1999 IEEE International Symposium on Circuits and Systems, ISCAS 99, 30 May-2 June 1999, Orlando, FL, USA, vol. 4, p. 528-531
Abstract: To convert a compressed video sequence to a lower-resolution compressed video, one typically needs to decompress the original sequence, down-sample each frame, and recompress it. It involves motion estimation in the reduced sequence, which is computational intensive. In this paper, a novel fast motion estimation algorithm is proposed to predict the motion vectors of the reduced-resolution video without performing any search. The motion vectors are predicted by applying spatial-variant filters to the motion vectors of the original compressed high-resolution video. In our simulations, our method outperforms other existing fast predictive algorithms which involves no searching.
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