AUTO-ALIGNED ILLUMINATION FOR INTERACTIVE SENSING IN RETRO-REFLECTIVE IMAGING APPLICATIONS

摘要

Interactive sensing in retro-reflective imaging systems may be enabled through auto-alignment of an infrared (IR) illumination region with a floating image region by transmitting IR light, added on or within a display, through the same optical path as the visible floating image light. The IR illumination at the display may be either a flood of light or structured light. In some implementations, stereo vision based imaging techniques may be employed in conjunction with an auto-aligned IR floating image to provide illumination for a stereo imaging system and to provide position sensing for interaction.

主权项

1. A method comprising:
determining an optical path of light forming a floating image on a display plane; providing infrared (IR) illumination to the display plane through the optical path to automatically align a region of the IR illumination and a region of the floating image; and providing position sensing of the floating image through a sensor employing stereo vision to enable user interaction with the floating image in response to the sensor detecting the aligned region of the IR illumination.