{"product_id":"classification-of-mouth-action-units-von-sarah-adel-bargal","title":"Classification of Mouth Action Units","description":"\u003cp\u003eAutomated facial expression recognition is still a grand challenge in computer vision.  The process of facial expression recognition consists of three main stages after image  pre-processing and face acquisition. These stages are extracting the feature vector,  which describes the facial image, reducing the dimensionality of that vector if  possible, and finally, classifying test images into certain classes after training using  the reduced dimensionality vector.      A contribution to the first stage is chosen since the key issue in the analysis is finding  a descriptive, representative, efficient, and easy to compute feature vector of the facial  image. This work lays the ground for building a system that automatically, and in  real-time classifies mouth action units (of the facial action coding system) with  acceptable rates, and that is illumination tolerant. This is done by proposing the  application of local binary patterns (LBPs) to the feature extraction stage of mouth  action unit classification. LBPs require no manual pre-processing or initialization, contribute to a real-time system by being computationally simple, are illumination  tolerant, and can be used in low-resolution images.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783659106637\"\u003e\u003ch3\u003eUsing Local Binary Patterns\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783659106637","offer_id":39487770132573,"sku":"9783659106637","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/ce54bfff-89a0-45cf-9165-414cb508a5aa.jpg?v=1773121067","url":"https:\/\/shop.autorenwelt.de\/en\/products\/classification-of-mouth-action-units-von-sarah-adel-bargal","provider":"Autorenwelt Shop","version":"1.0","type":"link"}