Interactive input system

摘要

An interactive input system (50) comprises at least two imaging devices (60) acquiring images of a region of interest from different locations and having overlapping fields of view and at least one receiver (62) separate from the imaging devices and configured to receive contact verify data output by an active pointer (70) when the active pointer is within the fields of view of the imaging devices and is in contact with a touch surface (54). The at least one receiver is further configured to receive command data output by the active pointer when the active pointer is within the fields of view of the imaging devices and when the active pointer is outside of the fields of view of the imaging devices; and The interactive input system further comprises a processing structure (64) processing image data acquired by the at least two imaging devices and contact verify data received by the at least one receiver to detect and verify the existence of an active pointer in contact with the touch surface and to determine the location of the pointer within the region of interest. The processing structure further processing the command data received by the at least one receiver.