公开(公告)号：US20240273734A1

公开(公告)日：2024-08-15

申请号：US18438018

申请日：2024-02-09

Applicant: Northern Digital Inc.

Inventor： Larry Chen ,  Uditha Jayarathne ,  Steven van Hengstum

IPC: G06T7/246 ,  G06T17/00 ,  G06V10/74 ,  H04N5/74

CPC classification number: G06T7/246 ,  G06T17/00 ,  G06V10/761 ,  H04N5/74 ,  G06V2201/07

Abstract: A system includes a projector to project a pattern of dots within a tracking volume, a medical instrument having markers and positioned within the tracking volume, an image capture unit to capture images of the medical instrument and the markers. The image capture unit captures images of the pattern of dots within the tracking volume, and a computing device performs operations that include initiating capture of at least two images of the medical instrument and the markers, determining a three-dimensional position of the markers from the captured images of the markers, initiating projection of the pattern of dots within the tracking volume, initiating capture, of at least two images of a portion of the pattern of dots, and determining three-dimensional positions of dots in the portion of dots from the captured images.