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arXiv 2306.01656cs.CVcs.HC
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使用 Transformer 网络从视频中进行反馈通道检测与同意程度估计

Backchannel Detection and Agreement Estimation from Video with Transformer Networks

German Research Center for Artificial Intelligence(德国人工智能研究中心);Saarland University(萨尔大学)

Ahmed Amer, Chirag Bhuvaneshwara, Gowtham K. Addluri, Mohammed M. Shaik, Vedant Bonde, Philipp Müller

AI总结:

本文提出用多模态 Transformer 融合姿态与面部特征,同时完成视频反馈通道检测及同意程度估计,并在 MultiMediate'22 两项任务上取得新最优结果。

摘要:

听者会使用简短的感叹词,即所谓的反馈通道(backchannel),来表示注意或表达同意。对该行为进行自动分析对于人类对话分析和交互式对话智能体具有关键意义。目前,基于视觉行为进行反馈通道分析的最先进方法使用两类特征:基于身体姿态的特征和基于面部行为的特征。与此同时,Transformer 神经网络已被确立为融合来自不同数据源输入的有效手段,但尚未被应用于反馈通道分析。在本研究中,我们对基于姿态和面部信息进行自动反馈通道分析的多模态 Transformer 架构开展了全面评估。我们同时处理反馈通道检测以及估计反馈通道中所表达同意程度的任务。在 MultiMediate'22 反馈通道检测挑战赛上的评估中,我们采用一层 Transformer 架构达到了 66.4% 的准确率,优于此前的最先进水平。此外,借助两层 Transformer 架构,我们在估计反馈通道所表达同意程度的任务上确立了新的最先进水平(0.0604 MSE)。

英文摘要:

Listeners use short interjections, so-called backchannels, to signify attention or express agreement. The automatic analysis of this behavior is of key importance for human conversation analysis and interactive conversational agents. Current state-of-the-art approaches for backchannel analysis from visual behavior make use of two types of features: features based on body pose and features based on facial behavior. At the same time, transformer neural networks have been established as an effective means to fuse input from different data sources, but they have not yet been applied to backchannel analysis. In this work, we conduct a comprehensive evaluation of multi-modal transformer architectures for automatic backchannel analysis based on pose and facial information. We address both the detection of backchannels as well as the task of estimating the agreement expressed in a backchannel. In evaluations on the MultiMediate'22 backchannel detection challenge, we reach 66.4% accuracy with a one-layer transformer architecture, outperforming the previous state of the art. With a two-layer transformer architecture, we furthermore set a new state of the art (0.0604 MSE) on the task of estimating the amount of agreement expressed in a backchannel.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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