Generating human interactive behaviours using the windowed Viterbi algorithm

Zheng, Y., Hicks, Yulia Alexandrovna ORCID: https://orcid.org/0000-0002-7179-4587, Marshall, Andrew David ORCID: https://orcid.org/0000-0003-2789-1395 and Cosker, Darren P. 2008. Generating human interactive behaviours using the windowed Viterbi algorithm. Presented at: 3rd International Conference on Computer Graphics Theory and Applications (GRAPP' 2008), Funchal, Portugal, pp. 353-358.

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Abstract

In this paper, we propose a new approach for generating interactive behaviours for virtual characters, namely the windowed Viterbi algorithm, capable of doing so in real-time. Consequently, we compare the performance of the standard Viterbi algorithm and the windowed Viterbi algorithm within our system. Our system tracks and analyses the behaviour of a real person in video input and produces a fully articulated three dimensional (3D) character interacting with the person in the video input. Our system is model-based. Prior to tracking, we train a collection of dual Hidden Markov Model (HMM) on 3D motion capture (MoCap) data representing a number of interactions between two people. Then using the dual HMM, we generate a moving virtual character reacting to (the motion of) a real person. In this article, we present the detailed evaluation of using the windowed Viterbi algorithms within our system, and show that our approach is suitable for generating interactive behaviours in real-time.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Completion
Status:	Unpublished
Schools:	Computer Science & Informatics Engineering
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Last Modified:	05 May 2024 20:52
URI:	https://orca.cardiff.ac.uk/id/eprint/21598

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