This is the first volume of the two-volume set (CCIS 528 and CCIS 529) that contains extended
abstracts of the posters presented during the 17th International Conference on Human-Computer
Interaction HCII 2015 held in Heraklion Crete Greece in August 2015.The total of 1462
papers and 246 posters presented at the HCII 2015 conferences was carefully reviewed and
selected from 4843 submissions. These papers address the latest research and development
efforts and highlight the human aspects of design and use of computing systems. The papers
thoroughly cover the entire field of human-computer interaction addressing major advances in
knowledge and effective use of computers in a variety of application areas. The papers included
in this volume are organized in the following topical sections: design and evaluation methods
techniques and tools cognitive and psychological issues in HCI virtual augmented and mixed
reality cross-cultural design design for aging children in HCI product design gesture
gaze and motion detection modelling and recognition reasoning optimisation and machine
learning for HCI information processing and extraction for HCI image and video processing for
HCI brain and physiological parameters monitoring dialogue systems.