Motion estimation
AssigneeU.S. Philips Corporation
InventorsErwin B. Bellers, Gerard De Haan
Life of this patent
Estimating the term…
Abstract
In a method of estimating motion vectors from subsampled video data (I), first vectors are estimated (ME, PM2) between an image with a first sub-sampling phase and an earlier image sub-sampled with a second sub-sampling phase, second vectors are estimated (ME, PM1) between an image with a second sub-sampling phase and an earlier image sub-sampled with a first subsampling phase, and the first and second vectors are combined (CD) to obtain output motion vectors (MV).
Claims2
A method of estimating motion vectors from sub-sampled video data, the method comprising the steps:
- estimating first vectors between an image with a first sub-sampling phase and an earlier image sub-sampled with a second sub-sampling phase;
- estimating second vectors between an image with the second sub-sampling phase and an earlier image sub-sampled with the first sub-sampling phase;
- and
- combining said first and second vectors, wherein said combining step includes setting an output vector y-component to zero in case the signs of respective y-components of said first and said second vectors differ.
A method of estimating motion vectors from sub-sampled video data, the method comprising the steps:
- estimating first vectors between an image with a first sub-sampling phase and an earlier image sub-sampled with a second sub-sampling phase;
- estimating second vectors between an image with the second sub-sampling phase and an earlier image sub-sampled with the first sub-sampling phase;
- and
- combining said first and second vectors, wherein said combining step includes setting an output vector y-component to an even value in case values of respective y-components of said first and said second vectors lie close to, but on mutually different sides of said even value.
Dependencies are inferred from the claim text.