This is the code repository for the OMG emotion challenge 2018.
Arxiv paper: Multimodal Utterance-level Affect Analysis using Visual, Audio and Text Features

To run this code, you need to install these libraries first

• Keras 2.+
• keras-vggface 0.5
• tensorflow 1.5+
• OpenFace 1.0.0
• openSMILE feature extraction tool
• nltk 3.+
• pickle, numpy, sklearn, matplotlib, csv, matlab

In data prepration, all videos will be downloaded, and splitted into utterances into /Videos/Train, /Videos/Validation,/Video/Test (the csv files for train, validation, test set can be requested from OMG emotion challenge)

1. data_preparation: run python create_videoset.py

In feature extraction, the features for three modal are extracted

2. feature_extraction:
   
   • run python OpenFace_extractor: OpenFace features are extracted
     
   • run python generate_visual_features.py: VGG Face fc6 features are extracted.
     
   • run extract_audio_files.py: audio files are extracted from video format files.
     
   • run generate_audio_feature_utterance_level.py: openSMILE features are extracted.
     
   • run generate_word_features.py: text features from Bing Liu's opinion lexicon are extracted.
     
   • run /MPQA/count_pn.m and /MPQA/parse_MPQA_feature.py : text features from MPQA Subjectivity Lexicon are extracted.

In experiment:

• data.py provides normalized features and labels.
  
• models.py contains definitions of unimodal models, trimodal models in late and early fusion.
  
• functions.py defines some custom functions used as loss function or metric.
  
• train.py: train and evaluation.