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System and method for model adaptation

  • US 10,460,472 B2
  • Filed: 07/13/2017
  • Issued: 10/29/2019
  • Est. Priority Date: 05/19/2017
  • Status: Active Grant
First Claim
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1. A method for adapting a matching model of an object comprising the following steps:

  • (a) providing an electronic image of the object;

    (b) providing a matching model of the object, the matching model comprising a plurality of model levels comprising a plurality of points and optionally a plurality of directions;

    (c) determining a pose of the object in said electronic image by using a matching approach that uses said matching model, wherein step (c) includes;

    (c1) creating an image pyramid of said electronic image, the image pyramid consisting of a plurality of image levels,(c2) determining the pose of the object on a first image level of the image pyramid with a lower resolution by using a first model level that corresponds to the first image level,(c3) refining the pose of the object on a second image level of the image pyramid with a higher resolution by using a second model level that corresponds to the second image level;

    (d) transforming the matching model according to said pose, yielding a transformed model;

    (e) determining for at least one point of said transformed model a corresponding point in said electronic image; and

    (f) adapting the matching model according to the at least one determined corresponding point.

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