Interaction Detection Using Structured Light Images

摘要

An apparatus and method are provided to determine the occurrence and location of an interaction with an interface, particularly with an image of a user interface that may be projected or otherwise produced on a surface. The apparatus uses one or more single-element sensors (such as a photodiode) to sense and capture light readings of a scene, the readings corresponding to a plurality of structured light images injected within the presentation of the interface. The readings are compared to a baseline set of readings to determine the occurrence and location of an interaction event by an obstacle (i.e., a finger or a stylus) such as a touch event or a movement of the obstacle.

主权项

1. A method comprising:
sensing using at least one photodiode a plurality of time-varying structured light images individually projected on a surface in individual time slots to generate a plurality of sensor readings, wherein individual ones of the sensor readings correspond to individual ones of the plurality of time-varying structured light images; comparing using at least one processing device at least a portion of the plurality of sensor readings with at least a portion of a plurality of baseline sensor readings, the at least a portion of the plurality of sensor readings and the at least a portion of the plurality of baseline sensor readings corresponding to a same set of the plurality of time-varying structured light images; and determining using the at least one processing device an occurrence of an interaction based on the comparing.