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Salient point-based arrangements

  • US 9,648,197 B2
  • Filed: 04/08/2015
  • Issued: 05/09/2017
  • Est. Priority Date: 04/26/2011
  • Status: Active Grant
First Claim
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1. A system comprising:

  • a printed article including printed artwork, and a machine readable identifier printed with said artwork;

    a computer including a processor and a memory, the memory containing instructions and data configuring the computer to receive a payload decoded from the printed article by a camera-equipped phone device, and to provide salient point data for said printed article in reply;

    said salient point data comprising, for each of plural salient points on the printed article;

    location information for said point on the article; and

    orientation information for said point on the article, and/or information representing a feature vector associated with said location;

    wherein said system enables the camera-equipped phone device to perform an augmented reality function in which (a) the device determines its spatial pose relative to the printed article, and (b) the device presents, on a screen thereof, both the camera-captured imagery, and also a graphical augmentation that is rotated, scaled or warped in accordance with said determined pose and overlaid atop imagery captured from said article, through use of said salient point data.

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