Towards Leaning Aware Interaction with Multitouch Tabletops

2016.10 | NordiCHI 2016

Interactive tabletops allow direct touch manipulation and recognizing simultaneous touch events. Users sometimes lean on the touch surface creating unintended touch input. Our work demonstrates how this unintended input can be employed to enhance interaction. In a study we develop a posture set organized into four classes. We present a vision-based machine-learning algorithm using an active shape model to recognize the classes. The algorithm categorizes lean gestures into one of the classes for interaction purposes. In a second study, we evaluate the model and propose interaction scenarios that use lean detection.


tabletop interaction, active shape models, interactive surface, Leaning, lean recognition


Proceedings of the 9th Nordic Conference on Human-Computer Interaction

Project Info



Khanh-Duy Le, Mahsa Paknezhad, Paweł W. Woźniak, Maryam Azh, Gabrielė Kasparavičiūtė, Morten Fjeld, Shengdong Zhao, and Michael S. Brown