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Texture refreshment need metric for resilient object-based video coding

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2 Author(s)
Soares, L.D. ; Instituto Superior Tecnico, Lisbon, Portugal ; Pereira, F.

Video encoders may use several techniques to improve error resilience. In particular, for video encoders that rely on predictive (inter) coding to remove temporal redundancy, intra coding refreshment is especially useful to stop error propagation when errors occur in the transmission or storage of the coded streams, which can cause the decoded quality to decay very rapidly. In object-based video coders, intra coding refreshment can be applied to both shape and texture data. A texture refreshment need metric is proposed which can be used by object-based video encoders, notably MPEG-4 video encoders, to determine when the texture of the various video objects in a scene should be refreshed in order to improve the decoded video quality, e.g. for a certain amount of bitrate resources.

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Multimedia and Expo, 2002. ICME '02. Proceedings. 2002 IEEE International Conference on  (Volume:2 )

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