US 12,033,278 B2
Method for generating a 3D model
Peter John Myerscough-Jackopson, Oxford (GB); and Leonardo Rubio Navarro, Oxford (GB)
Assigned to ResMed Sensor Technologies Limited, (IE)
Appl. No. 17/796,475
Filed by RESMED SENSOR TECHNOLOGIES LIMITED, Dublin (IE)
PCT Filed Jan. 29, 2021, PCT No. PCT/EP2021/052199
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2021/152144, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 2001386 (GB), filed on Jan. 31, 2020.
Prior Publication US 2023/0144111 A1, May 11, 2023
Int. Cl. G06T 17/00 (2006.01); G06T 15/04 (2011.01); G06V 40/16 (2022.01)
CPC G06T 17/00 (2013.01) [G06T 15/04 (2013.01); G06V 40/166 (2022.01)] 22 Claims
OG exemplary drawing
 
1. A method for generating a three-dimensional model of at least part of a head including at least a part of a face, comprising:
obtaining a distance image of the head using a distance-measuring device having an imaging position, the distance image comprising for each of a two-dimensional array of distance pixels, a respective distance value indicating a distance from the imaging position to a corresponding point in a field of view of the distance-measuring device, the distance image including a face portion corresponding to the at least part of the face;
estimating the position, relative to the imaging position, of a longitudinal axis of the model of the head based on at least one dimension of the at least part of the face; and
generating the three dimensional model of the at least part of the head based on them position of the longitudinal axis.