Method and system for measuring periodontal pocket depth

    公开(公告)号:US12213852B2

    公开(公告)日:2025-02-04

    申请号:US17289938

    申请日:2019-10-31

    Applicant: 3SHAPE A/S

    Abstract: A system for measuring a depth of a periodontal pocket defined by a gap between a tooth and gingiva includes a frame, one camera, and a processor. The frame is configured to be worn by a user. The camera is configured to capture at least one 2D image of an intraoral target area. The at least one 2D image includes a representation of at least a part of the tooth, a gingiva margin defined by a section of the gingiva adjacent to the at least a part of the tooth, and a probe tip when the probe tip is inserted into the periodontal pocket. The processor is configured to receive the captured at least one 2D image and to determine an insertion length of the probe tip in the periodontal pocket. The determined insertion length represents the depth of the periodontal pocket.

    System and method for reconstructing 3-D shapes of objects from reflection image

    公开(公告)号:US12149673B2

    公开(公告)日:2024-11-19

    申请号:US18138199

    申请日:2023-04-24

    Inventor: Jinwei Ye Jie Lu

    Abstract: A system and method are provided for reconstructing 3-D point cloud. A light source generates light that is received by a polarization field generator, which generates a polarization field that illuminates the target object being imaged such that each outgoing ray has a unique polarization state. A camera captures images of the illuminated target object and the captured images are received by a processor that: (1) performs a polarization field decoding algorithm that decodes the polarization field to obtain a set of incident rays; (2) performs a camera ray decoding algorithm to obtain a set of camera rays; (3) performs a ray-ray intersection algorithm that determines intersection points where the incident rays and the camera rays intersect; and (4) performs a 3-D reconstruction algorithm that uses the set of incident rays, the set of camera rays and the intersection points to reconstruct a 3-D point cloud of the target object.

    Device and method for generating photometric stereo images and a color image

    公开(公告)号:US12095971B2

    公开(公告)日:2024-09-17

    申请号:US17880682

    申请日:2022-08-04

    Inventor: Hans-Peter Diehl

    CPC classification number: H04N13/254 H04N13/15 H04N13/207 H04N13/257

    Abstract: A device for generating a photometric stereo image and a color image of an object which is moved at a predetermined relative speed relative to the device. The device includes a lighting area and a lighting arrangement which is oriented to the lighting area. The lighting arrangement cyclically emits a lighting sequence in the lighting area. The lighting sequence has at least four lighting pulses each of which have a wavelength range and a lighting direction. At least three of the at least four lighting pulses have a different wavelength range, and at least two of the at least four lighting pulses have a different lighting direction and a same wavelength range.

    IMAGING APPARATUS
    6.
    发明公开
    IMAGING APPARATUS 审中-公开

    公开(公告)号:US20240251157A1

    公开(公告)日:2024-07-25

    申请号:US18411604

    申请日:2024-01-12

    Inventor: Takashi SUZUKI

    Abstract: An imaging apparatus for causing a user to perform image shooting for modeling of a subject, the imaging apparatus includes: an image sensor configured to capture an image of a subject to generate image data; an output interface configured to output information to the user; and a controller configured to recognize a situation in which image shooting operation is executed by the imaging apparatus, to control the output interface, the image shooting operation including a plurality of times of imaging by the image sensor for modeling the subject, wherein the controller is configured to cause the output interface to output shooting guide information, according to the recognized situation in the image shooting operation, the shooting guide information guiding the user to succeed in shooting of each of a plurality of images for modeling of the subject.

    Dual-lens camera system with only one image sensor

    公开(公告)号:US12003837B2

    公开(公告)日:2024-06-04

    申请号:US17835880

    申请日:2022-06-08

    Abstract: A dual-lens camera system includes a first lens, a second lens, an image sensor corresponding to a position of the first lens, and a reflecting assembly. The reflecting assembly includes a first reflecting member and a second reflecting member corresponding to a position of the second lens. The first reflecting member is movable between a first position at which an optical path from the first lens to the image sensor is blocked but an optical path from the second reflecting member to the image sensor is not blocked, and a second position at which the optical path from the first lens to the image sensor is not blocked but the optical path from the second reflective member to the image sensor is blocked. Only one image sensor is used in the dual-lens camera system, which saves cost and takes up less internal space of the electronic device.

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