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Issue No.08 - August (2008 vol.30)
pp: 1330-1345
We propose a new two-stage framework for joint analysis of head gesture and speech prosody patterns of a speaker towards automatic realistic synthesis of head gestures from speech prosody. In the first stage analysis, we perform Hidden Markov Model (HMM) based unsupervised temporal segmentation of head gesture and speech prosody features separately to determine elementary head gesture and speech prosody patterns, respectively, for a particular speaker. In the second stage, joint analysis of correlations between these elementary head gesture and prosody patterns is performed using Multi-Stream HMMs to determine an audio-visual mapping model. The resulting audio-visual mapping model is then employed to synthesize natural head gestures from arbitrary input test speech given a head model for the speaker. In the synthesis stage, the audio-visual mapping model is used to predict a sequence of gesture patterns from the prosody pattern sequence computed for the input test speech. The Euler angles associated with each gesture pattern are then applied to animate the speaker head model. Objective and subjective evaluations indicate that the proposed synthesis by analysis scheme provides natural looking head gestures for the speaker with any input test speech, as well as in ``prosody transplant" and ``gesture transplant" scenarios.
Audio input/output, Face and gesture recognition, Pattern analysis
Mehmet E. Sargin, Yucel Yemez, Engin Erzin, Ahmet M. Tekalp, "Analysis of Head Gesture and Prosody Patterns for Prosody-Driven Head-Gesture Animation", IEEE Transactions on Pattern Analysis & Machine Intelligence, vol.30, no. 8, pp. 1330-1345, August 2008, doi:10.1109/TPAMI.2007.70797
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