6533b82dfe1ef96bd1291288
RESEARCH PRODUCT
Perceptually weighted optical flow for motion-based segmentation in MPEG-4 paradigm
J. GuttierrezIrene EpifanioF.j. FerriJesús Malosubject
business.industryMean squared prediction errorComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISIONOptical flowcomputer.file_formatPerceptual weightingOptical flow computationRobustness (computer science)Motion estimationComputer Science::MultimediaMPEG-4Computer visionSegmentationArtificial intelligenceElectrical and Electronic EngineeringbusinesscomputerMathematicsdescription
In the MPEG-4 paradigm, the sequence must be described in terms of meaningful objects. This meaningful, high-level representation should emerge from low-level primitives such as optical flow and prediction error which are the basic elements of previous-generation video coders. The accuracy of the high-level models strongly depends on the robustness of the primitives used. It is shown how perceptual weighting in optical flow computation gives rise to better motion estimates which consistently improve motion-based segmentation compared to equivalent unweighted motion estimates.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-01-01 | Electronics Letters |