A Novel Motion Field Anchoring Paradigm for Highly Scalable Wavelet-Based Video Coding
Existing video coders anchor motion fields at frames that are to be predicted. In this paper, we demonstrate how changing the anchoring of motion fields to reference frames has some important advantages over conventional anchoring. We work with piecewise-smooth motion fields, and use breakpoints to...
| Veröffentlicht in: | IEEE transactions on image processing : a publication of the IEEE Signal Processing Society. - 1992. - 25(2016), 1 vom: 09. Jan., Seite 39-52 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2016
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| Zugriff auf das übergeordnete Werk: | IEEE transactions on image processing : a publication of the IEEE Signal Processing Society |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't |
| Zusammenfassung: | Existing video coders anchor motion fields at frames that are to be predicted. In this paper, we demonstrate how changing the anchoring of motion fields to reference frames has some important advantages over conventional anchoring. We work with piecewise-smooth motion fields, and use breakpoints to signal discontinuities at moving object boundaries. We show how discontinuity information can be used to resolve double mappings arising when motion is warped from reference to target frames. We present an analytical model that allows to determine weights for texture, motion, and breakpoints to guide the rate-allocation for scalable encoding. Compared with the conventional way of anchoring motion fields, the proposed scheme requires fewer bits for the coding of motion; furthermore, the reconstructed video frames contain fewer ghosting artefacts. The experimental results show the superior performance compared with the traditional anchoring, and demonstrate the high scalability attributes of the proposed method |
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| Beschreibung: | Date Completed 18.03.2016 Date Revised 24.11.2015 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
| ISSN: | 1941-0042 |
| DOI: | 10.1109/TIP.2015.2496332 |