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Systems and methods for active depth imager with background subtract

  • US 10,582,178 B2
  • Filed: 11/02/2016
  • Issued: 03/03/2020
  • Est. Priority Date: 11/02/2016
  • Status: Active Grant
First Claim
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1. An active depth imaging system with background subtract comprising:

  • an illuminator for emitting a light ray projecting a bright spot to an object in a scene, the object reflecting the emitted light ray;

    a first imager for imaging a first image set of the scene and a second imager for imaging a second image set of the scene, the first and second image sets each including an illuminator-on image data representing the scene when the illuminator is in an on mode, and an illuminator-off image data representing the scene when the illuminator is in an off mode;

    an image processor programmed to;

    generate a first and a second background-subtracted image data by, for each of the first and second image sets, subtracting the illuminator-off image data from the illuminator-on image data, andanalyze the first and the second background-subtracted image data using triangulation based on a common feature in the first and the second background-subtracted images to determine a depth of the object reflecting the emitted light ray in the scene, the common feature being the projected bright spot.

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