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Combining feature-level and decision-level fusion in a hierarchical classifier for emotion recognition in the wild

机译:在层次分类器中结合特征级和决策级融合,以进行野外情感识别

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摘要

Emotion recognition in the wild is a very challenging task. In this paper, we investigate a variety of different multimodal features (acoustic and visual) from video clips to evaluate their discriminative abilities in human emotion analysis. For each clip, we extract MSDF BoW, LBP-TOP, PHOG, LPQ-TOP and Audio features. We train different classifiers for every type of feature on the AFEW dataset from the ICMI 2014 EmotiW Challenge, and we propose a novel hierarchical classification framework, which combines the feature-level and decision-level fusion strategy for all of the extracted multimodal features. The final achievement we gain on the AFEW test set is 47.17%, which is considerably better than the best baseline recognition rate of 33.7%. Among all of the teams participating in the ICMI 2014 EmotiW challenge, our recognition performance won the first runner-up award. Furthermore, we test our method on FERA and CK datasets, the experimental results also show good performance.
机译:在野外进行情感识别是一项非常具有挑战性的任务。在本文中,我们从视频剪辑中研究了多种不同的多峰特征(声音和视觉),以评估它们在人类情感分析中的判别能力。对于每个剪辑,我们提取MSDF BoW,LBP-TOP,PHOG,LPQ-TOP和音频功能。我们从ICMI 2014 EmotiW挑战赛的AFEW数据集中为每种类型的特征训练了不同的分类器,并提出了一个新颖的分层分类框架,该框架结合了所有提取的多峰特征的特征级和决策级融合策略。我们在AFEW测试仪上获得的最终成绩为47.17%,大大优于33.7%的最佳基准识别率。在参加ICMI 2014 EmotiW挑战赛的所有团队中,我们的表彰表现均获得了亚军。此外,我们在FERA和CK数据集上测试了我们的方法,实验结果也显示出良好的性能。

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