AUTO-ALIGNED ILLUMINATION FOR INTERACTIVE SENSING IN RETRO-REFLECTIVE IMAGING APPLICATIONS
First Claim
Patent Images
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.
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Abstract
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.
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Citations
20 Claims
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1. A method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computing device comprising:
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a retro-reflective display; an illumination source; one or more sensors; a memory configured to store instructions; a processor coupled to the memory, the retro-reflective display, the one or more sensors, and the illumination source, the processor operable to execute an interactive sensing application in conjunction with the instructions stored in the memory, wherein the interactive sensing application is configured to; determine an optical path of light forming a floating image on a display plane; provide infrared (IR) illumination from the illumination source 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 provide position sensing of the floating image through the one or more sensors to enable user interaction with the floating image in response to the one or more sensors detecting the aligned region of the IR illumination. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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projecting infrared (IR) light into a display, wherein the IR light is partially transmitted through a panel of the display, scattered, and reflected back from an active region of the panel, wherein the active region is a region of the IR light aligned with a region of a floating image; and employing the active region of the panel to register the floating image with one or more sensors associated with the display. - View Dependent Claims (20)
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Specification