Method and apparatus for motion vector field encoding
First Claim
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1. A method of representing motion in a sequence of digitized images comprising generating and coding a plurality of versions of a motion vector field at different resolutions, comprising the steps of:
- producing a motion vector field at a first, coarse, resolution and at a second, finer, resolution;
up-sampling the coarse resolution version of the motion vector field;
comparing the up-sampled coarse resolution version of the motion vector field with the finer resolution version of the motion vector field;
coding the coarse resolution version of the motion vector field; and
coding the finer resolution version of the motion vector field on the basis of the results of the comparison.
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Abstract
A method and apparatus for representing motion in a sequence of digitized images derives a dense motion vector field and vector quantizes the motion vector field.
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Citations
11 Claims
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1. A method of representing motion in a sequence of digitized images comprising generating and coding a plurality of versions of a motion vector field at different resolutions, comprising the steps of:
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producing a motion vector field at a first, coarse, resolution and at a second, finer, resolution; up-sampling the coarse resolution version of the motion vector field; comparing the up-sampled coarse resolution version of the motion vector field with the finer resolution version of the motion vector field; coding the coarse resolution version of the motion vector field; and coding the finer resolution version of the motion vector field on the basis of the results of the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for representing motion in a sequence of digitized images comprising means for generating and coding a plurality of versions of a motion vector field at different resolutions, the apparatus further comprising:
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comprising the steps of; means for producing a motion vector field at a first, coarse, resolution and at a second, finer, resolution; means for up-sampling the coarse resolution version of the motion vector field; means for comparing the up-sampled coarse resolution version of the motion vector field with the finer resolution version of the motion vector field; means for coding the coarse resolution version of the motion vector field; and means for coding the finer resolution version of the motion vector field on the basis of the results of the comparison. - View Dependent Claims (10, 11)
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Specification