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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 .
The original Blob Tree was created in the early 1980s [2] by Pip Wilson and Ian Long as a way of communicating with young people and adults who found reading difficult. [3] The Blob Tree collection consists of a set of illustrations of blob figures in various poses and expressions, each representing a different emotion or feeling. [4]
As opposed to the IAPS, all OASIS images are in the public domain. A detailed description is provided on the first author's homepage. Other alternative databases of photographic images of scenes with various kinds of affective content include: Besançon Affective Picture Set-adult (BAPS-Adult) [20] Categorized Affective Pictures Database (CAP-D ...
However, an equals sign, a number 8, a capital letter B or a capital letter X are also used to indicate normal eyes, widened eyes, those with glasses or those with crinkled eyes, respectively. Symbols for the mouth vary, e.g. ")" for a smiley face or "(" for a sad face. One can also add a "}" after the mouth character to indicate a beard.
Emotion classification, the means by which one may distinguish or contrast one emotion from another, is a contested issue in emotion research and in affective science. Researchers have approached the classification of emotions from one of two fundamental viewpoints: [citation needed] that emotions are discrete and fundamentally different constructs
The forced choice method determines the emotion attributed to the facial expressions via the labels that are presented. [26] That is, participants will select the best match to the facial expression even if it is not the emotion label they would have provided spontaneously and even if they would not have labeled the expression as an emotion at all.
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.
Thus, emotional expressions are culturally-prescribed performances rather than internal mental events. Knowing a social script for a certain emotion allows one to enact the emotional behaviors that are appropriate for the cultural context. [26] Emotional expressions serve a social function and are essentially a way of reaching out to the world ...