| 摘要 |
An embodiment of the invention relates to a method for providing a compressed video bitstream related to consecutive pictures of a video sequence, wherein the pictures are defined by pixels, said method comprising the steps of: (a) applying at least one higher-order motion model to a motion vector field and generating at least one higher-order motion parameter set for said motion vector field, wherein said motion vector field comprises a plurality of first motion vectors, each first motion vector being assigned to a pixel block and describing the local displacement of the pixel block from the preceding picture to the consecutive picture, and wherein each pixel block comprises a plurality of pixels; (b) calculating a second motion vector for each pixel block based on the higher-order motion parameter set; (c) calculating the deviation between the first motion vector and the second motion vector for each pixel block; and (d) generating a video bitstream comprising the higher-order motion parameter set, and for each pixel block an information which indicates or is based on the deviation calculated in step (c).
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