Title page -- Contents -- Introduction -- Motivation -- Organization of this monograph -- Psychological Studies on Emotion Perception -- Emotion vs affect vs feelings -- Emotions and culture -- Basic Emotions -- Culturally Specific Expressions of Emotions -- Higher Cognitive Emotions -- Neurobiology and Emotion Expression -- Cerebral Cortex -- Amygdala -- Superior Temporal Sulcus -- Implicit and Explicit Perception of Emotion -- Expression of Emotion -- Written Language -- Speech -- Facial Expressions -- Body movements and Hand gestures -- Facial Expression of Emotion -- Previous Attempts to Facial Emotion Quantification and Classification -- External Factors in Facial Emotion Perception -- Face and Facial Expressions: Their Role -- The Importance of Understanding Emotions -- Meeting Emotional Needs with the Help of Advanced Human-Computer Interaction Techniques -- Supporting emotional skill needs -- Supporting experiential needs -- Studies and Systems on Emotion Recognition -- Face Databases -- Specifying Requirements for an Ideal Facial Expression Database -- Previous Facial Expression Databases -- Section Summary - Results -- Face Detection -- Specifying Requirements for an Ideal Face Detection System -- Previous Works on Face Detection -- Section Summary - Results -- Facial Expression Classification System -- Specifying Requirements for our Facial Expression Classification System -- Facial Expression Classification Approaches -- Section Summary - Results -- Face Image Databases -- The Database of Low Quality Face Images (DBLQFI) -- The Database of High Quality Face Images (DBHQFI) -- Empirical Studies on Emotion Recognition -- Preliminary Questionnaires -- Newer (Detailed) Questionnaires -- The detailed questionnaire structure -- The observer and subject backgrounds -- Results from Statistical Analysis -- Statistical Analysis per Expression.

Difficulties of Facial Expression Classification as Outlined by the Participants -- Statistical Significance of the Results -- Extraction of Facial Expression Classification Features -- Summary - Conclusions -- Visual-Facial Emotion Recognition System -- Face Detection -- P. Sinha's Template -- The Face Detection Algorithm - Image Preprocessing -- Artificial Neural Network-Based Face Detectors -- Performance Evaluation -- Summary and Conclusions -- Introduction to our Facial Expression Recognition System -- First attempts for facial expression recognition -- The Facial Expression Classification Algorithm (1st Attempts) -- Feature Validation (First Attempts) -- Neural Network Classifiers (First Attempts) -- Results from neural network classifiers (First Attempts) -- Facial expression recognition system -- Feature Selection -- Image Preprocessing and Feature Extraction -- The extraction algorithm for the rest of facial features -- Combination of all and computation of feature vector -- Quantification of Feature Discrimination Power -- Classifiers for Facial Expression Classification -- Classification Performance Assessment -- More Sophisticated Classifiers -- Experimental performance evaluation -- Summary - Conclusions -- Human Motion and Gesture Analysis -- Introduction -- Human detection and motion tracking -- Marker-based approaches -- Markerless approaches -- Hand Gesture recognition -- The meaning of hand gestures -- Techniques for hand gesture recognition -- Emotion Recognition Systems from Body Movements and Gestures -- Conclusions and Future Work -- Summary and Conclusions -- Current and Future Work -- Towards a multimodal emotion recognition system -- Towards extending the visual-facial expression recognition.