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Shape-Based Edge Detection

  • US 10,528,853 B1
  • Filed: 06/29/2012
  • Issued: 01/07/2020
  • Est. Priority Date: 06/29/2012
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an imaging sensor;

    a projector;

    one or more processors; and

    one or more non-transitory computer-readable storage media storing computer-executable instructions that, when executed by the one or more processors, cause the one or more processors to perform acts comprising;

    obtaining a point set using the imaging sensor, the point set describing, at least in part, a display medium upon which content is to be projected;

    identifying a shape of an observed contour of the display medium based on a position of the display medium relative to the projector, the shape of the observed contour comprising points of the point set corresponding to a periphery of the display medium;

    analyzing one or more shape models relative to the shape of the observed contour;

    identifying a shape model from the one or more shape models that corresponds to the shape of the observed contour;

    aligning the shape model to the shape of the observed contour by;

    separating the shape model into two or more segments; and

    adjusting at least one of a size, position, or orientation of at least one of the two or more segments of the shape model based on at least one of a size, position, or orientation of a corresponding segment of the shape of the observed contour;

    identifying a shape of the periphery of the display medium based at least in part on the aligned shape model; and

    projecting the content onto the display medium with the projector based at least in part on the identified shape of the periphery of the display medium.

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