Mobile interaction -- Investigation of the Effect of Letter Labeling Positions on Consecutive Typing on Mobile Devices -- Study on Size Design of Touch-sensitive Button -- The Effect of Progress Indicator Speeds on Users' Time Perceptions and Experience of a Smartphone User Interface -- Mobile Phone-based Device for Personalised Tutorials of 3D Printer Assembly -- Micro Touch Board Specially Designed for SliT that is the Japanese Character Input Method for Smartwatches -- Emotion and Movement with AppIHC: Promoting Interaction and Socialization among Participants of Scientific Events via Mobile Application -- Heterogeneous Device Arrangements Affect Both Partners' Experiences in Collaborative Media Spaces -- G-Menu: A Keyword-by-Gesture based Dynamic Menu Interface for Smartphones -- Facial expressions and emotions recognition -- Deep Convolutional Neural Networks for Feature Extraction in Speech Emotion Recognition -- A Preliminary Experiment on the Estimation of Emotion usingFacial Expression and Biological Signals -- Application of Classification Method of Emotional Expression Type Based on Laban Movement Analysis to Design Creation -- How to compare and exchange facial expression perceptions between different individuals with Riemann geometry -- Transform Facial Expression Space to Euclidean Space Using Riemann Normal Coordinates and Its Applications -- Affective Monitor: A Process of Data Collection and Data Preprocessing for Building a Model to Classify the Affective State of a Computer User -- Influence of EQ on the Difference of Biometric Emotion and Self-evaluated Emotion -- Facial Expression Recognition for Children: Can Existing Methods Tuned for Adults be Adopted for Children -- Eye-gaze, gesture and motion-based interaction -- An Application of Somatosensory Interaction for 3D Virtual Experiments -- Using an Eye Tracker to Investigate the Effect of Sticker on LINE APP for Older Adults -- Development of Privacy Protection Monitoring Systems Using Skeleton Models and Their Evaluation on the Viewpoint of FUBEN-EKI -- Improve Cutting Skill According to Skill and Difficulty Level -- Virtual Space Pointing Based on Vergence -- Applicability Study of Eye Movement Menu based on Analytic Hierarchy Process -- Study on Spatiotemporal Characteristics of Gaze Gesture Input -- Angle and load measurement method for ankle joint using active bone-conducted sound sensing -- The Study of Teleoperation Technology Based on Hand Gesture Recognition -- The Assessment of Sencogi: A Visual Complexity Model Predicting Visual Fixations -- Evaluation of Orientation Correction Algorithms in Real-Time Hand Motion Tracking for Computer Interaction -- Translating the Pen and Paper Brainstorming Process into a Cognitive and Immersive System -- Consistency Study of 3D Magnetic Vectors in an Office Environment for IMU-based Hand Tracking Input Development -- Body Movements for Communication in Group Work Classified by Deep Learning -- Eliminating the Pupillary Light Response from Pupil Diameter Measurements using an RGB camera -- Interaction in Virtual and Augmented Reality -- Digital Design and Research of Ink Art Based on Infrared Interactive Projection Technology -Taking the work of "Listen to the Ink" as an example -- Text Entry in Virtual Reality: A Comprehensive Review of the Literature -- Evaluation of the Degree of Heat Conduction with the da Vinci Surgical System -- A Design of Augmented-Reality Smart Window Using Directive Information Fusion Technology for Exhibitions -- Proposal and Evaluation of AR-Based Microscopic Brain Surgery Support System -- Walking in the Head: Methods of Sonic Augmented Reality Navigation -- Gamification-based VR Rowing Simulation System -- Analysis of the Mixture of Linear and Circular Vections in Immersive Visual Space - Comparison of Forward and Backward Moving Visual Stimuli -- Multi-camera coordinate calibration and accuracy evaluation for robot control -- Performance and Accuracy Analysis of 3D Model Tracking for Liver Surgery -- A Study of Camera Tip Position Estimating Methods in Transnasal Endoscopic Surgery -- Wrist-Mounted Haptic Feedback for Support of Virtual Reality in Combination with Electrical Muscle Stimulation and Hanger Reflex.

The 3 volume-set LNCS 11566, 11567 + 11568 constitutes the refereed proceedings of the Human Computer Interaction thematic area of the 21st International Conference on Human-Computer Interaction, HCII 2019, which took place in Orlando, Florida, USA, in July 2019. A total of 1274 papers and 209 posters have been accepted for publication in the HCII 2019 proceedings from a total of 5029 submissions. The 125 papers included in this HCI 2019 proceedings were organized in topical sections as follows: Part I: design and evaluation methods and tools; redefining the human in HCI; emotional design, Kansei and aesthetics in HCI; and narrative, storytelling, discourse and dialogue. Part II: mobile interaction; facial expressions and emotions recognition; eye-gaze, gesture and motion-based interaction; and interaction in virtual and augmented reality. Part III: design for social challenges; design for culture and entertainment; design for intelligent urban environments; and design and evaluation case studies.