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Vision-based interactive projection system

  • US 9,626,042 B2
  • Filed: 04/14/2015
  • Issued: 04/18/2017
  • Est. Priority Date: 10/07/2011
  • Status: Active Grant
First Claim
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1. A projector system, comprising:

  • projection optics configured to project a display on a surface from a front side of the surface;

    a first light source configured to emit light in a first direction towards the surface from the front side of the surface;

    a second light source configured to emit light in a second direction towards the surface from the front side of the surface, wherein the light emitted in the second direction is emitted through the projection optics via a prism positioned between the second light source and a lens of the projection optics; and

    an image analyzer configured to;

    determine a position of an object placed in front of the surface, based at least in part on the emitted light in the first direction, wherein the position of the object is determined based on detecting one or more edges of the object in at least one image captured from the front side of the surface; and

    determine whether the object is touching the surface based at least in part on the emitted light in the second direction.

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