US 11,962,892 B2
Image based dentition tracking
Christopher E. Cramer, Durham, NC (US); Rajiv Venkata, San Jose, CA (US); Leela Parvathaneni, San Jose, CA (US); Phillip Thomas Harris, Cary, NC (US); Sravani Gurijala, Apex, NC (US); Svetozar Hubenov, Luzen (CH); Sebastien Hareng, San Jose, CA (US); Guotu Li, Apex, NC (US); Yun Gao, Cary, NC (US); and Chad Clayton Brown, Cary, NC (US)
Assigned to ALIGN TECHNOLOGY, INC., San Jose, CA (US)
Filed by ALIGN TECHNOLOGY, INC., San Jose, CA (US)
Filed on Jul. 22, 2021, as Appl. No. 17/443,243.
Claims priority of provisional application 63/200,432, filed on Mar. 5, 2021.
Claims priority of provisional application 62/705,954, filed on Jul. 23, 2020.
Prior Publication US 2022/0023003 A1, Jan. 27, 2022
Int. Cl. H04N 23/60 (2023.01); A61B 1/24 (2006.01); A61B 5/00 (2006.01); A61C 7/00 (2006.01); A61C 7/08 (2006.01); A61C 7/14 (2006.01); A61C 9/00 (2006.01); G06F 18/21 (2023.01); G06F 18/2415 (2023.01); G06F 18/2431 (2023.01); G06N 3/04 (2023.01); G06N 3/042 (2023.01); G06N 3/08 (2023.01); G06T 7/00 (2017.01); G06T 7/246 (2017.01); G06T 7/30 (2017.01); G06T 7/60 (2017.01); G06T 7/70 (2017.01); G06T 7/73 (2017.01); G06T 7/80 (2017.01); G06T 17/00 (2006.01); G06T 17/20 (2006.01); G06T 19/00 (2011.01); G06V 10/44 (2022.01); G06V 10/56 (2022.01); G06V 10/98 (2022.01); G16H 10/60 (2018.01); G16H 20/40 (2018.01); G16H 30/40 (2018.01); G16H 40/20 (2018.01); G16H 50/20 (2018.01); G16H 50/50 (2018.01); G16H 70/20 (2018.01); G16H 80/00 (2018.01)
CPC H04N 23/64 (2023.01) [A61B 1/24 (2013.01); A61B 5/0088 (2013.01); A61C 7/002 (2013.01); A61C 7/08 (2013.01); A61C 7/146 (2013.01); A61C 9/0053 (2013.01); G06F 18/217 (2023.01); G06F 18/2415 (2023.01); G06F 18/2431 (2023.01); G06N 3/04 (2013.01); G06N 3/042 (2023.01); G06N 3/08 (2013.01); G06T 7/0012 (2013.01); G06T 7/0014 (2013.01); G06T 7/251 (2017.01); G06T 7/30 (2017.01); G06T 7/60 (2013.01); G06T 7/70 (2017.01); G06T 7/74 (2017.01); G06T 7/80 (2017.01); G06T 17/00 (2013.01); G06T 17/20 (2013.01); G06T 19/00 (2013.01); G06V 10/443 (2022.01); G06V 10/56 (2022.01); G06V 10/98 (2022.01); G16H 10/60 (2018.01); G16H 20/40 (2018.01); G16H 30/40 (2018.01); G16H 40/20 (2018.01); G16H 50/20 (2018.01); G16H 50/50 (2018.01); G16H 70/20 (2018.01); G16H 80/00 (2018.01); G06T 2200/24 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/30036 (2013.01); G06T 2207/30244 (2013.01); G06T 2210/41 (2013.01); G06V 2201/03 (2022.01)] 24 Claims
OG exemplary drawing
 
1. A method of dental treatment comprising:
identifying a stage of a treatment plan administered to a person's dentition;
receiving a two-dimensional photo of the person's dentition corresponding to the stage of the treatment plan;
gathering a three-dimensional (3D) model of the person's dentition corresponding to the stage of the treatment plan;
projecting attributes of the 3D model of the person's dentition onto an image plane to get a projected representation of the person's dentition at the stage of the treatment plan;
comparing a position of one or more teeth of the person's dentition in the two-dimensional photo to the projected representation of the person's dentition to derive a two-dimensional error image representing the comparison; and
analyzing the two-dimensional error image for discrepancies, wherein analyzing includes determining a distance between corresponding edges in the error image, and wherein the discrepancies represent one or more deviations of the person's dentition from the stage of the treatment plan.