Parametric Motion Vector Derivation for Video Coding

10039/TUB: Parametric Motion Vector Derivation for Video Coding


Video encoding methods save motion vector fields locally in a buffer to predict the following frames, thus reducing the size of the error pattern that is needed to decode the frames. This so-called motion- compensated prediction derives the motion vector field for the motion of pixel blocks from frame to frame. If several pixel blocks have identical motion vectors, it is sufficient to save only one of these pixel blocks. In this way it is possible to further reduce the amount of necessary data by 4 to 5 %. The presented method reduces the amount of data even further, by using a model with 8 parameters of a higher order.

We have to consider, that motion vectors which can be derived from a so-called warping matrix are not transmitted separately. Here the error rate decreases with the increase of the number of parameters. The decoder uses the motion parameters to reconstruct the vector field. Remaining motion vectors are transmitted without additional manipulation. Therefore, the amount of data that is transmitted can only decrease, an increase is not possible.

Anwendungsmöglichkeiten / Possible applications:
  • Video Software Industry
  • Online Video Portals
Interested? Contact Us! Interested? Contact Us!
Show all techoffers Vorteile / Benefits:
  • Bit rate reduction
  • Data rate can only be reduced, but not increased
  • Easy to apply
Entwicklungsstand / Development status:


Reifegrad / Maturity level:


Schlagworte / Tags:
bit rate reduction, pixel trajectories, video encoder
Schutzrechte / Property rights:

US - granted

Patentinhaber / Patent holder:

Technische Universität Berlin

Möglichkeiten der Zusammenarbeit / Possible cooperation:
  • R&D Cooperation
  • Patent Purchase
  • Licensing

Ansprechpartnerin / Contact Person:
Ina Krüger

Tel.: 030 314-75916
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