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1.发明公开公开(公告)号：US20230397805A1
公开(公告)日：2023-12-14
申请号：US18033713
申请日：2022-02-17
Inventor： Yoshio OHTSUKA , Masato lZAWYA , Tomoki OGAWA , Toshiyuki NAKASHIMA , Masayuki AIHARA , Kazuhiro FUNAMOTO , Tadashi MIKI
Abstract: An intraoral camera system includes an imaging unit that generates image data by capturing an image of a tooth inside the mouth of a user, an area detector that detects the orientation of the imaging unit according to output by a multi-axis acceleration sensor and detects, according to the orientation detected, an area whose image is being captured by the imaging unit from among areas inside the mouth, the areas being determined by dividing a dentition into sections, and an identifier that narrows candidates which are combinations of tooth types and tooth positions down to fewer candidates to be used, according to the image data and the area detected, and identifies the type and the position of the tooth according to the narrowed candidates and the image data.
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公开(公告)号：US20230377101A1
公开(公告)日：2023-11-23
申请号：US18030445
申请日：2021-11-24
Inventor： Yoshio OHTSUKA , Masato IZAWA , Tomoki OGAWA , Toshiyuki NAKASHIMA , Masayuki AIHARA , Kazuhiro FUNAMOTO , Tadashi MIKI
IPC: G06T5/00 , G06T7/90 , G06T7/136 , G06T7/00 , G06T5/50 , H04N17/00 , H04N23/74 , H04N23/76 , H04N23/72 , A61B1/24 , A61B1/06
CPC classification number: G06T5/005 , G06T7/90 , G06T7/136 , G06T7/97 , G06T5/50 , H04N17/002 , H04N23/74 , H04N23/76 , H04N23/72 , A61B1/24 , A61B1/0625 , G06T2207/30036 , G06T2207/20221
Abstract: A dentition image capturing system includes: illumination devices to radiate light; an imaging device to capture first and second dentition images in a predetermined exposure period; a high luminance region extraction unit to extract a high luminance region for the first and second dentition images; a high luminance region comparison unit to calculate a degree of similarity between the high luminance region of the first dentition image and the second dentition image; a halation region specification unit to specify the high luminance region of the first dentition image as a halation region in a case where the similarity degree is smaller than a predetermined threshold; an image synthesis processing unit executing image synthesis processing of extracting a trimming region in the second dentition image corresponding to the halation region and replacing the halation region with the trimming region; and a dentition image output unit to output the first dentition image.
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公开(公告)号：US20230329538A1
公开(公告)日：2023-10-19
申请号：US18033718
申请日：2022-02-17
Inventor： Yoshio OHTSUKA , Masato IZAWA , Tomoki OGAWA , Toshiyuki NAKASHIMA , Masayuki AIHARA , Kazuhiro FUNAMOTO , Tadashi MIKI
Abstract: An intraoral camera system includes an imaging unit and an image determination unit. The imaging unit generates an image data item showing a target tooth for image capturing inside a mouth. The image determination unit defines two-dimensional plane coordinates for the image data item generated by the imaging unit and extracts the position coordinates of the outline of the target tooth from the entire imaging area of the imaging unit. When a part of the outline of the target tooth is outside an effective area set inside the entire imaging area of the imaging unit, the image determination unit determines that the target tooth extends beyond the effective area.
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公开(公告)号：US20230165454A1
公开(公告)日：2023-06-01
申请号：US17921289
申请日：2022-02-17
Inventor： Yoshio OHTSUKA , Masato IZAWA , Tomoki OGAWA , Toshiyuki NAKASHIMA , Masayuki AIHARA , Kazuhiro FUNAMOTO , Tadashi MIKI
CPC classification number: A61B1/247 , A61B1/04 , A61B1/00009 , A61B1/00045 , A61C19/04
Abstract: An intraoral camera system includes an imaging unit and an image processor. If a first angle formed by an imaging plane perpendicular to the optical axis of the imaging unit and a first direction that is the vertically upward direction along a vertical axis is less than a predetermined second angle, the image processor rotates image data to cause the vertically upward direction along the vertical axis to coincide with an upward direction of an image by rotating the image data by a third angle formed by the first direction and a second direction from a handle toward a head.
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