Expressive Gesture in Tangible Acoustic Interfaces
A. Camurri, C. Canepa, P. Coletta, A. Massari, G. Volpe
University of Genova, Italy
Research Objectives
- Development of an open platform (EyesWeb version 4) for integrated multimodal processing of data from Tangible Acoustic Interfaces (TAIs)
- Development of multimodal and cross-modal models and algorithms for analysis of expressive gesture in TAIs
- Development of early prototypes of TAIs integrating algorithms for in-solid acoustic localisation systems.
- Research is carried out in the framework of the EU-IST Project TAI-CHI (Tangible Acoustic Interfaces for Computer Human Interaction)
Platform: EyesWeb 4.0
- Conceived for supporting research on multimodal expressive interfaces and interactive systems
- Widely employed for designing and developing real-time dance, music, and multimedia apps
- Adopted in EU - IST projects: 5FP: MEGA, CARE-HERE, MEDIATE 6FP: STREP TAI-CHI, NoEs Enactive and Humaine
- Adopted in research centers, universities and industries
- Distributed for free on www.eyesweb.org Supported with public newsgroups
Platform: EyesWeb 4.0
- Includes libraries for audio and video processing
- Includes libraries for movement analysis
- Includes support for commercial applications
- Can be freely extended by third parties
- Supports consolidated industrial standards(e.g., Steinberg VST and ASIO (support to audio multi-channel h/w boards), OSC, MIDI, tcp/ip, serial, firewire, USB webcam, wide range of sensors and frame grabbers, etc.)
EyesWeb 4.0: new features
- Integration in the EyesWeb language of aspects related to multimodal processing of different data stream. E.g., user do not have to explicitly care about synchronization of streams, the language automatically support this
- Subpatching mechanism fully supported
- Optimization of the kernel for management of audio and video streams
- Support for multiprocessor systems
- Complete separation of the kernel from the user interface
- Different user interfaces can be developed and employed, depending on the specific application
EyesWeb 4.0: new features
- Standalone applications which do not need user interface and have to operate for days in unsupervised environments can run with a minimal (or without) GUI
- Simplified connection of the EyesWeb platform with other software platforms
- Simplified hosting of standard plugins
- Interaction with hardware managed by a new level of abstraction: devices
- Multiple versions allowed on a single PC
- Multiple instances allowed at the same time
EyesWeb 4.0: new features (con.)
- Portable patches: xml
- Better audio support
- New portable SDK
- Beta release in www.eyesweb.org
- Final release under testing in a permanent museum interactive installation (Museo del Mare e della Navigazione, Genova).
Cross-modal processing in TAIs
- E.g., Video processing of visual representations of acoustic signals (e.g., auditory display):

- E.g., Video processing of visual representations of acoustic signals (e.g., auditory display):

Multimodal processing in TAIs
E.g., algorithms based on the integrated analysis of the sound produced by hands (tapping on a table, handwriting) and the hand gesture (bimodal):
EyesWeb 4 support to Cross-Modality and Multimodality
- The same module can operate on different datatypes: e.g., the same “segmentation” Eyw module can be used for different streams (audio, movement cues, sensor data ...)
- Support to resampling, interpolation, adaptation to simultaneous processing of different streams
- Data conversion, synchronization, etc.
- Extension toward object-oriented programming
- These features are not emerging to the programmer and the user unless requested, but are provided (and extensible) in the EyesWeb visual language
TAIs in EyesWeb 4
- In-solid localization of touching positions
- Applied to everyday objects (chairs, tables)
- Concert at Teatro La Fenice (Venice), composer Roberto Doati, September 2005.

TAIs in EyesWeb 4 (con.)
- Hand tracking and postures
- Expressive hand gestures
- How the hand approaches the TAI?

TAIs in EyesWeb 4 (con.)
- Acoustic handwriting
- Integration of audio and visual techniques for symbol classification

title
- Development of super-modal models for expressive gesture analysis in TAIs
- Integration of techniques from partners in the TAI-CHI Project
- Validation of the research results and assessment of the developed TAIs with experiments with users.