US 12,141,948 B2
Dentition image capturing system and dentition image capturing method
Yoshio Ohtsuka, Osaka (JP); Masato Izawa, Osaka (JP); Tomoki Ogawa, Osaka (JP); Toshiyuki Nakashima, Nara (JP); Masayuki Aihara, Osaka (JP); Kazuhiro Funamoto, Hyogo (JP); and Tadashi Miki, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/030,445
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Nov. 24, 2021, PCT No. PCT/JP2021/042961
§ 371(c)(1), (2) Date Apr. 5, 2023,
PCT Pub. No. WO2022/113995, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 2020-197574 (JP), filed on Nov. 27, 2020.
Prior Publication US 2023/0377101 A1, Nov. 23, 2023
Int. Cl. G06T 5/77 (2024.01); A61B 1/06 (2006.01); A61B 1/24 (2006.01); G06T 5/50 (2006.01); G06T 7/00 (2017.01); G06T 7/136 (2017.01); G06T 7/90 (2017.01); H04N 17/00 (2006.01); H04N 23/72 (2023.01); H04N 23/74 (2023.01); H04N 23/76 (2023.01)
CPC G06T 5/77 (2024.01) [A61B 1/0625 (2022.02); A61B 1/24 (2013.01); G06T 5/50 (2013.01); G06T 7/136 (2017.01); G06T 7/90 (2017.01); G06T 7/97 (2017.01); H04N 17/002 (2013.01); H04N 23/72 (2023.01); H04N 23/74 (2023.01); H04N 23/76 (2023.01); G06T 2207/20221 (2013.01); G06T 2207/30036 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A dentition image capturing system comprising:
a plurality of illumination devices configured to irradiate a tooth to be captured with light from different directions;
an imaging device configured to capture first and second dentition images including the tooth under different illumination conditions of the plurality of illumination devices in a predetermined exposure period;
a high luminance region extraction unit configured to extract a high luminance region in which luminance exceeds a predetermined luminance threshold for each of the first and second dentition images;
a high luminance region comparison unit configured to calculate a degree of similarity indicating a degree of similarity between a high luminance region of the first dentition image and a high luminance region of the second dentition image;
a halation region specification unit configured to specify the high luminance region of the first dentition image as a halation region in a case where the degree of similarity is smaller than a predetermined similarity threshold;
an image synthesis processing unit configured to extract a trimming region in the second dentition image corresponding to the halation region of the first dentition image and execute image synthesis processing of replacing the halation region with the trimming region; and
a dentition image output unit configured to output the first dentition image subjected to image synthesis processing.