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    Barcode decoding method and barcode reader
    2.
    发明授权
    Barcode decoding method and barcode reader 有权

    公开(公告)号：US10223561B1

    公开(公告)日：2019-03-05

    申请号：US15900802

    申请日：2018-02-21

    Applicant: QISDA CORPORATION

    Inventor： Jun-Hao Kuo ,  Chieh-Ling Hsiao ,  Chia-Ching Tsai ,  Hung-Chih Chan

    IPC: G06K7/10 ,  G06K7/14 ,  H03M13/37 ,  H03M13/00

    Abstract: A barcode decoding method includes steps of (a) capturing an image of a barcode; (b) analyzing the image to recognize a data region of the barcode; (c) decoding the data region to obtain a codeword matrix, wherein the codeword matrix includes a plurality of codewords; (d) performing an error correction for the codeword matrix; (e) when the codeword matrix fails to pass the error correction, repeating steps (a) to (c), updating the codeword matrix according to a number of occurrence times of each codeword at an identical position of the codeword matrix, and repeating step (d) for the codeword matrix after updating; and (f) when the codeword matrix passes the error correction, decoding the codeword matrix.

    Operating intraoral scanner capable of constructing accurate dental model and method thereof
    4.
    发明授权
    Operating intraoral scanner capable of constructing accurate dental model and method thereof 有权

    公开(公告)号：US11628047B2

    公开(公告)日：2023-04-18

    申请号：US17191640

    申请日：2021-03-03

    Applicant: QISDA CORPORATION

    Inventor： Chuang-Wei Wu ,  Hung-Chih Chan

    IPC: A61C9/00 ,  A61C7/00 ,  A61C13/34

    Abstract: A method of operating an intraoral scanner. The intraoral scanner includes an image capturing device and a processor. The method includes the image capturing device sequentially capturing M images along a first dental arch, the processor establishing a first arch model of the first dental arch according to the M images, the image capturing device sequentially capturing N images along a straight-line path from a first anchor to a second anchor on the first dental arch, the processor generating first coordinates of the first anchor and second coordinates of the second anchor according to the N images, and the processor calibrating the first arch model according to the first coordinates and the second coordinates. The first anchor is located at one side of a dental midline of the first dental arch. The second anchor is located at the other side of the dental midline of the first dental arch.

    Operating Intraoral Scanner Capable of Constructing Accurate Dental Model and Method Thereof
    5.
    发明申请
    Operating Intraoral Scanner Capable of Constructing Accurate Dental Model and Method Thereof 有权

    公开(公告)号：US20210290348A1

    公开(公告)日：2021-09-23

    申请号：US17191640

    申请日：2021-03-03

    Applicant: QISDA CORPORATION

    Inventor： Chuang-Wei Wu ,  Hung-Chih Chan

    IPC: A61C9/00 ,  A61C13/34 ,  A61C7/00

    Abstract: A method of operating an intraoral scanner. The intraoral scanner includes an image capturing device and a processor. The method includes the image capturing device sequentially capturing M images along a first dental arch, the processor establishing a first arch model of the first dental arch according to the M images, the image capturing device sequentially capturing N images along a straight-line path from a first anchor to a second anchor on the first dental arch, the processor generating first coordinates of the first anchor and second coordinates of the second anchor according to the N images, and the processor calibrating the first arch model according to the first coordinates and the second coordinates. The first anchor is located at one side of a dental midline of the first dental arch. The second anchor is located at the other side of the dental midline of the first dental arch.

    Method of Operating Intraoral Scanner for Fast and Accurate Full Mouth Reconstruction
    8.
    发明申请
    Method of Operating Intraoral Scanner for Fast and Accurate Full Mouth Reconstruction 有权

    公开(公告)号：US20230048005A1

    公开(公告)日：2023-02-16

    申请号：US17539153

    申请日：2021-11-30

    Applicant: QISDA CORPORATION

    Inventor： Chuang-Wei Wu ,  Hung-Chih Chan ,  Tsung-Hsi Lee

    IPC: A61C9/00 ,  G06T19/00 ,  A61C19/05

    Abstract: An intraoral scanner includes an image capturing device and a processor. A method of operating the intraoral scanner includes the image capturing device sequentially capturing M images of a buccal bite, the processor generating M sets of buccal bite point clouds according to the M images, the processor matching the M sets of buccal bite point clouds to generate a bite model, when the number of data points of the bite model exceeds a first threshold, the processor computing P sets of bite feature descriptors of the bite model, when a predetermined quantity of bite feature descriptors in a set of bite feature descriptors of the P sets of bite feature descriptors exceeds a second threshold, the processor performing a registration on an upper arch model and a lower arch model to the buccal bite mode to generate a full mouth model.

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