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A facial expression database is a collection of images or video clips with facial expressions of a range of emotions. Well-annotated ( emotion -tagged) media content of facial behavior is essential for training, testing, and validation of algorithms for the development of expression recognition systems .
Facial expressions are used to communicate emotions. They can also occur solitarily, without other people being present. People often imagine themselves in social situations when alone, resulting in solitary facial expressions. [1] Toddlers and children in early childhood use social cues and contexts to discriminate and recognize facial ...
The universality hypothesis is the assumption that certain facial expressions and face-related acts or events are signals of specific emotions (happiness with laughter and smiling, sadness with tears, anger with a clenched jaw, fear with a grimace, or gurn, surprise with raised eyebrows and wide eyes along with a slight retraction of the ears ...
The Blob Tree was created by Pip Wilson & Ian Long. Recognising the need for a non-verbal, universally accessible tool for emotional expression and communication, they developed the Blob Tree as a way to bridge language and cultural barriers and make emotional expression more accessible to people of different ages and backgrounds.
The development of FACS tools for different species allows the objective and anatomical study of facial expressions in communicative and emotional contexts. Furthermore, a cross-species analysis of facial expressions can help to answer interesting questions, such as which emotions are uniquely human.
In discrete emotion theory, all humans are thought to have an innate set of basic emotions that are cross-culturally recognizable.These basic emotions are described as "discrete" because they are believed to be distinguishable by an individual's facial expression and biological processes. [1]
Affect displays are the verbal and non-verbal displays of affect (). [1] These displays can be through facial expressions, gestures and body language, volume and tone of voice, laughing, crying, etc. Affect displays can be altered or faked so one may appear one way, when they feel another (e.g., smiling when sad).
According to Ekman (1992), each of these emotions have universally corresponding facial expressions as well. [ 13 ] In addition to the facial expressions that are said to accompany each emotion, there is also evidence to suggest that certain autonomic nervous system (ANS) activity is associated with the three emotions of fear, anger, and disgust.