Patent ID: 11928839
Assignee: UDISENSE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method for photogrammetric measurement, comprising:
providing a bedsheet having one or more patterns printed thereon in accordance with a pattern template, which defines respective locations of the one or more patterns in a template coordinate frame;
receiving an image, in an image coordinate frame, of a person lying on the bedsheet while the bedsheet covers a bed;
processing the image in order to identify the one or more patterns in the image and to match the one or more patterns identified in the image to the one or more patterns in the pattern template;
computing a transformation, based on the matched patterns, between the image coordinate frame and the template coordinate frame; and
measuring a dimension of the person by applying the computed transformation to the image of the person.