Predictive motion estimation for reduced-resolution video from high-resolution compressed video
|Authors||Wong, Justy W.C.
Au, Oscar C.
Wong, Peter H.W.
|Source||IEEE International Conference on Image Processing, v. 2, 1998, p. 461-464|
|Summary||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, we propose a novel fast algorithm to predict the motion vector of the reduced video by using the original motion information in the compressed bitstream. We achieve a much higher quality than existing algorithms with low additional complexity.|
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