Optimized MPEG-4 animation encoder for motion capture data

Authors:
Marius Preda;Blagica Jovanova;Ivica Arsov;Françoise Prêteux
Affiliations:
Institut National des Télécommunications, Evry, France;Institut National des Télécommunications, Evry, France;Institut National des Télécommunications, Evry, France;Institut National des Télécommunications, Evry, France
Venue:
Proceedings of the twelfth international conference on 3D web technology
Year:
2007

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Abstract

This paper presents first compression results on using the MPEG-4 BBA standard for encoding motion capture data. We first introduce a detailed description of the main compression mechanisms used in recently BBA standard: prediction, frequency transform, quantization and entropy encoder and discuss the theoretical range of encoding performances. Then we introduce an optimized BBA encoder including also a key-frame reduction mechanism and show the compression results on animation files from typical motion capture data-base. We compare the results with the ones reported in literature showing the advantages of the MPEG-4 BBA in terms of bit-rate, complexity and range control.