Method and device for motion vector prediction in video...

Details Method and device for motion vector prediction in video... Method and device for motion vector prediction in video...

H - Electricity

04

N

H04N 7/50 (2006.01) H04N 21/2662 (2011.01) H04N 7/01 (2006.01)

Patent

CA 2727119

A transcoder and methods of encoding inter-prediction frames of a downsampled video wherein the downsampled video is a spatially downsampled version of a full- resolution video. Full-resolution motion vectors are downscaled and a weighting factor (w i) is calculated for each downscaled motion vector based upon the transform domain residual coefficients associated with that full-resolution motion vector. A motion vector prediction is made based on the weighted average using the downscaled motion vectors and their weighting factors (w i).

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