40 research outputs found

    Model design for scalable 2-D model-based video coding

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    3D face synthesis has been extensively used in many applications over the last decade. Although many methods have been reported, automatic 3D face synthesis from a single video frame still remains unsolved. An automatic 3D face synthesis algorithm is proposed, which resolves a number of existing bottlenecks

    A Temporal Subsampling Approach for Multiview Depth Map Compression

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    Optimal packetisation of MPEG-4 using RTP over mobile networks

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    The introduction of third-generation wireless networks should result in real-time mobile video communications becoming a reality. Delivery of such video is likely to be facilitated by the realtime transport protocol (RTP). Careful packetisation of the video data is necessary to ensure the optimal trade-off between channel utilisation and error robustness. Theoretical analyses for two basic schemes of MPEG-4 data encapsulation within RTP packets are presented. Simulations over a GPRS (general packet radio service) network are used to validate the analysis of the most efficient scheme. Finally, a motion adaptive system for deriving MPEG-4 video packet sizes is presented. Further simulations demonstrate the benefits of the adaptive system

    Pulsed residual excited linear prediction

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    Digital speech:coding for low bit rate communication systems

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    Improved pulsed residual excited linear prediction: A new excitation for CELP based speech coders

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    Generation of Non-Repetitive Everyday Impact Sounds for Interactive Applications

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