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    Automatic intraoral 3D scanner with low coherence ranging
    3.
    发明授权
    Automatic intraoral 3D scanner with low coherence ranging 有权

    公开(公告)号：US10888231B2

    公开(公告)日：2021-01-12

    申请号：US16324824

    申请日：2016-08-10

    申请人： Carestream Dental Technology Topco Limited

    发明人： Chuanmao Fan ,  Victor C. Wong ,  Yiyi Guan ,  Jean-Marc Inglese ,  Edward R. Shellard

    IPC分类号： A61B5/00 ,  A61C9/00 ,  A61B1/247

    摘要： An intraoral scanning apparatus has a source of low coherence light. An interferometer directs the low coherence light to a reference path and a sample path and generates image data according to interference from combined light returned along the reference and sample paths. A fixture is optically coupled to the sample path and has a bite portion featured for clamping between the jaws of a patient, a track that defines a curved scan path for scanning, one or more scanners configured to direct the sample path light to and from the teeth, and an actuator and translation apparatus that urges the one or more scanners along the curved scan path. A control logic processor synchronizes light scanning and acquisition from the fixture. A display is in signal communication with the control logic processor for display of acquired scan data.

    3-D intraoral surface characterization
    5.
    发明授权
    3-D intraoral surface characterization 有权

    公开(公告)号：US10731974B2

    公开(公告)日：2020-08-04

    申请号：US16462782

    申请日：2016-11-21

    申请人： Carestream Dental Technology Topco Limited

    发明人： James R. Milch ,  Victor C. Wong

    IPC分类号： G01B11/25 ,  G06T7/64 ,  G06T7/521 ,  A61C9/00

    摘要： A method for registering an imaging detector to a surface projects and records a sequence having a first sparse pattern of lines followed by a second sparse pattern of lines. A first subset of positions receives lines from both first and second sparse patterns corresponding to a first label. A second subset of positions receives only lines from the first sparse pattern corresponding to a second label. A third subset of positions receives only lines from the second sparse pattern corresponding to a third label. The first, second, and third labels are decoded and each member element of the first, second, and third subsets of positions registered to the imaging detector according to the decoded labels. One or more dense patterns of lines positionally correlated with registered member elements of the decoded labels are projected and recorded. An image of the surface contour is formed according to the recorded pattern.