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Group Emotion Recognition - Detect Face Expression icon

Group Emotion Recognition - Detect Face Expression

1.0 for Android

The description of Group Emotion Recognition - Detect Face Expression

This project aims to classify a group’s perceived emotion as Positive, Neutral or Negative.

The Need for Emotion Recognition

So, first of all, why do we need emotion recognition?

Emotion recognition is important -

- To improve the user’s experience, as a customer, learner, or as a generic service user.

- Can help improve services without the need to formally and continuously ask the user for feedback.

- Also, using automatic emotion recognition in public safety, healthcare, or assistive technology, can significantly improve the quality of people’s lives, allowing them to live in a safer environment or reducing the impact that disabilities or other health conditions have.

Applications of Emotion Recognition

Emotion Recognition has applications in crowd analytics, social media, marketing, event detection and summarization, public safety, human-computer interaction, digital security surveillance, street analytics, image retrieval, etc.

The rise of Group Emotion Recognition

The problem of emotion recognition for a group of people has been less extensively studied, but it is gaining popularity due to the massive amount of data available on social networking sites containing images of groups of people participating in social events.

Challenges facing Group Emotion Recognition

Group emotion recognition is a challenging problem due to obstructions like head and body pose variations, occlusions, variable lighting conditions, variance of actors, varied indoor and outdoor settings and image quality.


Our solution is a pipeline based approach which integrates two modules (that work in parallel): bottom-up and top-down modules, based on the idea that the emotion of a group of people can be deduced using both bottom-up and top-down approaches.

- The bottom-up module detects and extracts individual faces present in the
image and passes them as input to an ensemble of pre-trained Deep
Convolutional Neural Networks (CNNs).

- Simultaneously, the top-down module detects the labels associated with the
scene and passes them as input to a Bayesian Network (BN) which predicts
the probabilities of each class.

- In the final pipeline, the group emotion category predicted by the bottom-up
module is passed as input to the Bayesian Network in the top-down module
and an overall prediction for the image is obtained.

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Group Emotion Recognition - Detect Face Expression 1.0 Update

Group Emotion Recognition

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