US 11,832,895 B2
Method and system for register operating space
Bing-Feng Huang, Kaohsiung (TW); Po-Chi Hu, Kaohsiung (TW); Jin-Yuan Syue, Tainan (TW); and Chih-Lung Lin, Kaohsiung (TW)
Assigned to METAL INDUSTRIES RESEARCH & DEVELOPMENT CENTRE, Kaohsiung (TW)
Filed by METAL INDUSTRIES RESEARCH & DEVELOPMENT CENTRE, Kaohsiung (TW)
Filed on Dec. 21, 2020, as Appl. No. 17/128,228.
Prior Publication US 2022/0192751 A1, Jun. 23, 2022
Int. Cl. A61B 34/20 (2016.01); G06T 7/33 (2017.01); G06V 10/22 (2022.01); A61B 6/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 34/20 (2016.02) [G06T 7/33 (2017.01); G06V 10/225 (2022.01); A61B 6/547 (2013.01); A61B 2034/2057 (2016.02); A61B 2034/2065 (2016.02); A61B 2034/2068 (2016.02); A61B 2090/3764 (2016.02); G06T 2207/10116 (2013.01); G06T 2207/10148 (2013.01); G06T 2207/30012 (2013.01); G06V 2201/03 (2022.01)] 8 Claims
OG exemplary drawing
 
1. A system for registering operating space, the system comprising:
a first positioning mark configured to be set on a patient;
a local camera configured to capture a first image covering the first positioning mark;
a second positioning mark disposed on the local camera;
a global camera configured to capture a second image covering the second positioning mark, wherein a focus length of the global camera is shorter than a focus length of the local camera; and
a computer system communicatively connected to the local camera and the global camera and configured to provide a navigation interface based on the first image and the second image,
wherein a calibration procedure comprises:
capturing, by the local camera, a third image covering the first positioning mark;
recognizing, by the computer system, the first positioning mark in the third image to compute a first conversion model between the local camera and the first positioning mark;
capturing, by the gobal cambera, a fourth image covering the first positioning mark and the second positioning mark;
recognizing, by the computer system, the first positioning mark and the second positioning mark in the fourth image to compute a second conversion model between the global camera and the first positioning mark and compute a third conversion model between the global camera and the second positioning mark; and
computing, by the computer system, a fourth conversion model between the local camera and the second positioning mark according to the first conversion model, the second conversion model, and the third conversion mode.