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Manifestations of facial asymmetry in young adulthood: the relationship between asymmetry of facial expressions and manifestations of brain laterality
Hřebcová, Eliška ; Velemínská, Jana (advisor) ; Měšťák, Jan (referee)
This thesis focuses on assessing longitudinal changes in facial asymmetry of both neutral expression and various facial expressions in adolescents and young adults aged 15 to 18 years and their relation to handedness. Shape changes were evaluated in 30 girls and 27 boys of which 3 girls and 2 boys were left-handed. For the analysis, 3D geometric morphometry applied to 3D facial scans was used. The scanning itself took place on three different occasions with a 1-year gap between them. A total amount of 1440 facial scans were taken and processed, while 453 of those were used for the analyses. The output of those analyses are colour maps visualizing changes in facial shape. Right-handers were assessed as a mean group, while left-handers were assessed only as individuals, due to their low numbers. The results of longitudinal assessment in right-handers show very similar trends between boys and girls. Protrusion in right side of the forehead and right side of the nose and maxilla was observed, as well as right-sided protrusion of lower lip and mandible in later ages. Left-sided protrusion of angulus mandibulae was observed in both sexes. An almost complete absence of the forementioned forehead protrusion was observed in all left-handers. Protrusion was more often allocated on a left side of the nose....
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Facial expression recognition
Vránová, Markéta ; Odstrčilík, Jan (referee) ; Mézl, Martin (advisor)
This project deals with automatic recognition of facial expression in colour pictures. At first, the colour-based face detection is accomplished, three colour spaces are used: RGB, HSV and YCbcCr. As next, the pictures are automatically cropped so that only the face region is present. It is accomplished by computing the borders of the face region based on knowledge of position of eyes, nose and mouth. From the face region, the feature vector is obtained using a bank of Gabor filters. The project introduces two different kinds of Gabor filters and proposes a new bank of filters. The feature vector is used as an input to the neural network. The neural network was trained on a set of pictures from AR database created for facial expression recognition. The output of the network is the facial expression the input picture was assigned to. This project mentions the testing for different settings of the neural network and presents and discuss the recognition results of the network.
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Facial features recognition of unknown persons
Bartončík, Michal ; Babinec, Tomáš (referee) ; Horák, Karel (advisor)
This paper describes the various components and phases of the search and recognition of facial expressions of unknown persons. They are presented here as well as possible solutions and methods of addressing each phase of the project. My master’s thesis is designed to recognize facial expressions of unknown persons. For this thesis, I was lent industrial video camera, computer, and place in a laboratory. Furthermore, we introduce the color spaces and their use. From the lead representatives selects the most appropriate assistance for the use of Matlab and the proposed algorithm. After finding a suitable color space segments skin color in the image. The skin, however, surrounds the entire body and so need to be found, the separated parts of the image representing the color of skin, a face. Once you find a face is needed to find relevant points for the identification subsequent deformation to definition of facial expressions. We define here the actual muscle movements in different expressions.
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Own-race bias effect on facial expression
BOLDIŠOVÁ, Michaela
The bachelor thesis deals with the phenomenon of own-race bias (ORB) and its influence on the recognition of facial expressions. The theoretical part presents a perception of the face and its neurological essence. It focuses more on the very concept of ORB, its development during childhood and research conducted in this area. Finally, there is a chapter on facial expressions and their universality. The empirical part presents the methodology of the designed research, which aims to find influence of own-race bias on the recognition of facial expressions and the finding of a possible connection with intercultural contact. In addition to the design of the experiment, this section contains a detailed procedure of research and insight into the already completed computer experiment. Furthermore, the used database (The RADIATE Face Stimulus Set) is analyzed in detail and there is described the way in which such a database is searched for, and a questionnaire to determine the degree of intercultural contact. Data tables have been prepared to make the database easier to use. In the chapter Methodological analysis, the actual experimental procedure is presented in the context of the methodology of other experiments in this area and the discussion includes an analysis of their results and theoretical knowledge on the topic. The empirical part thus presents the reader with the necessary methodological procedure for carrying out his own own-race bias experiment in facial expression.
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Face recognition and emotional expression processing in primates
Englerová, Kateřina ; Nekovářová, Tereza (advisor) ; Fajnerová, Iveta (referee)
Visual modality is one of the most important senses for primates and also for many other an-imals. It allows them to perceive stimuli from their environment - important objects and places, and also conspecifics or individuals of other species. One of the crucial cognitive skills, especially for social animals, is the ability to distinguish between individuals and their emotions due to different facial features and expressions.Aim of this work is to summarize the current knowledge about face and emotion recognition. It includes neurological mechanisms, experimental methodologies and comparison between species.
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The Expressing of Emotions, Feelings and Moods through the Internet Communication
FEDROVÁ, Marie
The Bachelor's thesis deals with the expression of emotions, feelings, and moods through internet communication. The thesis is divided into two parts: a theoretical and an analytical part. The theoretical part summarizes the existing knowledge on internet communication and nonverbal communication, and briefly introduces emotions in the broadest sense. The analytical part aims to define 'smileys' which are used in written communication on the Internet. An important point of the analytical part is a comprehensive overview on how and what emoticons to use in a partikular situation
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Sociocultural conditionality of emotions
Ševčíková, Marcela ; Gillernová, Ilona (advisor) ; Boukalová, Hedvika (referee)
The purpose of this bachelor thesis is to explain the concept of emotions with the focus on their sociocultural conditionality. The thesis is divided into two basic sections. In the theoretical part important conceptions of emotions (neurophysiological, cognitivistic and evolutionary) are explained. Attention is paid to the proces of emotion regulation, in which the culture plays important role. Special chapter analysis the process of emotion expression showing both of its forms : verbal and nonverbal. Empirical part of the thesis presents a proposal of a research project, which purpose is to confirm some of the knowledges shown in the theoretical part. The research focuses on a pantomimic expression of emotions and its sociocultural conditionality.
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Face recognition and emotional expression processing in primates
Englerová, Kateřina ; Nekovářová, Tereza (advisor) ; Fajnerová, Iveta (referee)
Visual modality is one of the most important senses for primates and also for many other an-imals. It allows them to perceive stimuli from their environment - important objects and places, and also conspecifics or individuals of other species. One of the crucial cognitive skills, especially for social animals, is the ability to distinguish between individuals and their emotions due to different facial features and expressions.Aim of this work is to summarize the current knowledge about face and emotion recognition. It includes neurological mechanisms, experimental methodologies and comparison between species.
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