Mapping motion vectors for a Wyner-Ziv video transcoder

Authors:
Eduardo Peixoto;Ricardo L. De Queiroz;Debargha Mukherjee
Affiliations:
Universidade de Brasilia, Brasilia, Brazil;Universidade de Brasilia, Brasilia, Brazil;Hewlett Packard Laboratories, Palo Alto
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

Citing 3
Cited 0

Rate allocation for transform domain Wyner-Ziv video coding without feedback

MM '08 Proceedings of the 16th ACM international conference on Multimedia
Side-information generation for temporally and spatially scalable Wyner-Ziv codecs

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PRISM: A Video Coding Paradigm With Motion Estimation at the Decoder

IEEE Transactions on Image Processing

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Abstract

Wyner-Ziv (WZ) coding of video utilizes simple encoders and highly complex decoders. A transcoder from a WZ codec to a traditional codec can potentially increase the range of applications for WZ codecs. We present a transcoder scheme from the most popular WZ codec architecture to a DPCM/DCT codec. As a proof of concept, we implemented this transcoder using a simple pixel domain WZ codec and the standard H.263+. The transcoder design aims at reducing complexity, since the transcoder has to perform both WZ decoding and DPCM/DCT encoding, including motion estimation. New approaches are used to map motion vectors for such a transcoder. Results are presented to demonstrate the transcoder performance.