使用双峰线性预测模型的视听语音同步检测

Kshitiz Kumar, Jirí Navrátil, E. Marcheret, V. Libal, G. Ramaswamy, G. Potamianos
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引用次数: 12

摘要

在这项工作中,我们研究了在包含说话者正面头部姿势的视频片段中检测视听(AV)同步的问题。该问题在生物识别中具有重要的应用,例如欺骗检测,并且它构成了在多模态说话人识别中提取AV指纹所必需的AV分割的重要步骤。为了解决这个问题,我们提出了一个AV特征的时间演化模型,并推导了一种分析方法来捕捉它们之间的同步概念。我们在适当的AV数据库上报告结果,使用从说话者面部区域提取的两种视觉特征:几何特征和基于离散余弦图像变换的特征。我们的研究结果表明,与采用互信息的基线方法相比,该方法提供了更好的AV同步检测,其几何视觉特征优于图像变换特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Audio-visual speech synchronization detection using a bimodal linear prediction model
In this work, we study the problem of detecting audio-visual (AV) synchronization in video segments containing a speaker in frontal head pose. The problem holds important applications in biometrics, for example spoofing detection, and it constitutes an important step in AV segmentation necessary for deriving AV fingerprints in multimodal speaker recognition. To attack the problem, we propose a time-evolution model for AV features and derive an analytical approach to capture the notion of synchronization between them. We report results on an appropriate AV database, using two types of visual features extracted from the speaker's facial area: geometric ones and features based on the discrete cosine image transform. Our results demonstrate that the proposed approach provides substantially better AV synchrony detection over a baseline method that employs mutual information, with the geometric visual features outperforming the image transform ones.
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