Tangible bits: towards seamless interfaces between people, bits and atoms
Proceedings of the ACM SIGCHI Conference on Human factors in computing systems
Visual capture and understanding of hand pointing actions in a 3-D environment
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
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The SensitiveTable is a large multi-touch display that detects and tracks hands and objects in contact with it at 60 frames per second with a resolution of about 1.5 millimeters. A software application framework allows the creation of custom natural experiences. The table is equipped with array microphones and RFID antennas on its edges. The table runs a speaker independent speech recognition engine, based on a very small vocabulary, that is invoked only in specific circumstances. RFID tagged objects are used to populate the interface with contents, activate functions and authenticate users. Due to its analytical nature (high resolution and multi-point gestures), the table in the public space is used mostly as a form of digital mediation between two or more persons (e.g. consultant and customer): the expert can lead the novice through the more complex and less intuitive dynamics of interaction. We provide the SensitiveTable as an example of analytical natural interaction.