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System and method for depth-recovery of a face in an image

  • US 9,916,685 B1
  • Filed: 04/28/2016
  • Issued: 03/13/2018
  • Est. Priority Date: 04/28/2015
  • Status: Active Grant
First Claim
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1. A system for deriving a 3D model of a face from a 2D image captured with an image sensor, comprising:

  • a computing device executing software for performing the functions of;

    (a) placing a plurality of fiducial points at landmarks on said face, each of said fiducial points corresponding to a fiducial point for a mean face calculated over a database set of faces;

    (b) calculating a function which captures the deviation of each fiducial point from said mean fiducial point;

    (c) using a thin-plate spline function to create a test face by minimizing a function which provides a measure of the smoothness of the function calculated in step (b);

    (d) selecting a set of uniformly-distributed points on said mean face; and

    (e) finding a set of points on said test face corresponding to said uniformly-distributed set of points on said mean face; and

    (f) for each point in said set of points on said test face, calculating a depth coordinate.

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