US 11,703,992 B2
Method of identifying flange specification based on augmented reality interface
Chih-Hsing Chu, Hsinchu (TW); Mu-Hsuan Lee, Hsinchu (TW); Yen-Ru Chen, Hsinchu (TW); and Shau-Min Chen, Toufen (TW)
Assigned to NATIONAL TSING HUA UNIVERSITY, Hsinchu (TW)
Filed by National Tsing Hua University, Hsinchu (TW)
Filed on Mar. 31, 2021, as Appl. No. 17/218,838.
Claims priority of application No. 109143055 (TW), filed on Dec. 7, 2020.
Prior Publication US 2022/0179541 A1, Jun. 9, 2022
Int. Cl. G06F 3/04815 (2022.01); G06F 3/04842 (2022.01); G06T 7/62 (2017.01); G06F 3/04845 (2022.01); G06T 17/00 (2006.01); H04N 5/232 (2006.01); G06F 3/01 (2006.01); G06T 19/00 (2011.01)
CPC G06F 3/04815 (2013.01) [G06F 3/012 (2013.01); G06F 3/013 (2013.01); G06F 3/04842 (2013.01); G06F 3/04845 (2013.01); G06T 7/62 (2017.01); G06T 17/00 (2013.01); G06T 19/006 (2013.01); H04N 5/23222 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of identifying a flange specification based on an augmented reality interface applied to an electronic device, the method comprising:
an environment depth creating step of providing a first interface representing each of real-time images of a flange to allow an operator to select the real-time images of the flange to be processed at different viewing angles through the first interface, obtaining multiple sets of plane feature point information according to the real-time images, and creating a virtual flange surface according to the multiple sets of plane feature point information;
a circumferential point picking step of providing a second interface, on which the virtual flange surface and each of the real-time images are superimposed, to allow the operator to pick three circumferential points corresponding to the flange through the second interface, determining a virtual outer diameter according to the three circumferential points located on a plane substantially the same as the virtual flange surface, and creating a virtual flange model having the virtual outer diameter and a virtual pitch circle diameter;
a pitch-circle-diameter adjusting step of providing a third interface, on which the virtual flange model and each of the real-time images are superimposed, to allow the operator to adjust the virtual pitch circle diameter of the virtual flange model through the third interface;
a flange thickness adjusting step of providing a fourth interface, on which the virtual flange model and each of the real-time images are superimposed, to allow the operator to adjust a virtual thickness of the virtual flange model through the fourth interface;
a bolt count inputting step of providing a fifth interface, through which the operator inputs a count of bolts; and
a searching step of searching a database according to the virtual outer diameter, the virtual pitch circle diameter and the virtual thickness of the virtual flange model, and obtaining one or multiple searched results of physical flanges matching with the virtual flange model.