Intelligent facial expression recognition method and system based on face attribute analysis

Abstract

The invention provides a face expression recognition method and a face expression recognition system under face attribute constraints. The face expression recognition method comprises the following steps of: (1) training a face expression recognition model, wherein training set is divided into subsets according to face attribute categories, and each subset is subjected to training to generate a set of conditional random forests for face expression classification; and (2) carrying out face expression recognition, which is implemented by: firstly, performing attribute estimation on a test face image by using a face attribute random forest; secondly, randomly selecting a corresponding number of decision trees from a conditional random forest to dynamically construct a facial expression recognition random forest according to an attribute estimation result; and finally, performing facial expression classification recognition according to the constructed facial expression recognition randomforest. The face expression recognition method and the face expression recognition system eliminate the influence of attribute change factors such as the gender and the age of the human face on humanface expression recognition, and solve the problem of interference of factors such as different genders and ages in human face expression recognition through adopting the provided attribute constraintrandom forest human face expression recognition method.

Description

technical field [0001] The invention belongs to the field of image processing and pattern recognition, and in particular relates to a technical method and system for facial expression recognition. Background technique [0002] Facial expression recognition, like face recognition, is a hot research field with a wide range of application scenarios. For example, it can be applied to safe driving, health care, video conferencing, virtual reality and cognitive science. As early as in the twentieth century, Ekman and Friesen designed six basic emotions (anger, disgust, fear, happiness, sadness and surprise) based on cross-cultural and cross-regional research. They pointed out that humans with different cultural backgrounds have the same basic emotional expressions . However, recent advanced research in neuroscience and psychology has shown that the six basic human emotional expressions are related to specific cultural backgrounds and are not universal. At the same time, the inv...

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