In this thesis, we proposed a deep learning based emotion recognition system in order
to improve the successive classification rate. We first use transfer learning to extract visual
features and use Mel frequency Cepstral Coefficients(MFCC) to extract audio features, and
then apply the recurrent neural networks(RNN) with attention mechanism to process the
sequential inputs. After that, the outputs of both channels are fused into a concatenate layer,
which is processed using batch normalization, to reduce internal covariate shift. Finally, the
classification result is obtained by the softmax layer. From our experiments, the video and
audio subsystem achieve 78% and 77% respectively, and the feature fusion system with
video and audio achieves 92% accuracy based on the RAVDESS dataset for eight emotion
classes. Our proposed feature fusion system outperforms conventional methods in terms of
classification prediction.
| Identifer | oai:union.ndltd.org:purdue.edu/oai:figshare.com:article/17161157 |
| Date | 20 December 2021 |
| Creators | Yanan Song (11825003) |
| Source Sets | Purdue University |
| Detected Language | English |
| Type | Text, Thesis |
| Rights | CC BY 4.0 |
| Relation | https://figshare.com/articles/thesis/Feature_Fusion_Deep_Learning_Method_for_Video_and_Audio_Based_Emotion_Recognition/17161157 |
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