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    Image-stitching for dimensioning
    1.
    发明授权
    Image-stitching for dimensioning 有权

    公开(公告)号：US10134120B2

    公开(公告)日：2018-11-20

    申请号：US14870488

    申请日：2015-09-30

    Applicant: Hand Held Products, Inc.

    Inventor： Brian L. Jovanovski ,  Jingquan Li

    IPC: G06T5/50 ,  G05B19/402 ,  G01B11/25 ,  H04N5/232 ,  H04N13/02 ,  B65G1/137

    Abstract: Dimensioning systems may automate or assist with determining the physical dimensions of an object without the need for a manual measurement. A dimensioning system may project a light pattern onto the object, capture an image of the reflected pattern, and observe changes in the imaged pattern to obtain a range image, which contains 3D information corresponding to the object. Then, using the range image, the dimensioning system may calculate the dimensions of the object. In some cases, a single range image does not contain 3D data sufficient for dimensioning the object. To mitigate or solve this problem, the present invention embraces capturing a plurality of range images from different perspectives, and then combining the range images (e.g., using image-stitching) to form a composite range-image, which can be used to determine the object's dimensions.

    Document decoding system and method for improved decoding performance of indicia reading terminal
    2.
    发明授权
    Document decoding system and method for improved decoding performance of indicia reading terminal 有权

    公开(公告)号：US10049250B2

    公开(公告)日：2018-08-14

    申请号：US14817311

    申请日：2015-08-04

    Applicant: Hand Held Products, Inc.

    Inventor： Jingquan Li ,  Timothy P. Meier ,  Robert M. Hussey

    IPC: G06K7/10 ,  G06K7/14

    Abstract: Embodiments of the present invention comprise an indicia reading terminal including operatively configured to interact with a storage module to store data, including location data, of a decodable indicia found in a captured document image. In one embodiment, the indicia reading terminal can be provided with one or more pre-stored information about the decodable indicia and/or the document. In another embodiment the indicia reading terminal can be provided with instructions and similarly operatively configured components that can identify information about the decodable indicia, store such information in a table, and utilize the tabulated data to process captured image data of subsequent documents.

    Method of error correction for 3D imaging device
    3.
    发明授权
    Method of error correction for 3D imaging device 有权

    公开(公告)号：US09880268B2

    公开(公告)日：2018-01-30

    申请号：US13912262

    申请日：2013-06-07

    Applicant: Hand Held Products, Inc.

    Inventor： Brian L. Jovanovski ,  Jingquan Li

    IPC: G01B11/00 ,  G01B11/24 ,  G01S7/497 ,  G01S17/89

    Abstract: A method is presented for correcting errors in a 3D scanner. Measurement errors in the 3D scanner are determined by scanning each of a plurality of calibration objects in each of a plurality of sectors in the 3D scanner's field of view. The calibration objects have a known height, a known width, and a known length. The measurements taken by the 3D scanner are compared to the known dimensions to derive a measurement error for each dimension in each sector. An estimated measurement error is calculated based on scans of each of the plurality of calibration objects. When scanning target objects in a given sector, the estimated measurement error for that sector is used to correct measurements obtained by the 3D scanner.

    Methods for improving the accuracy of dimensioning-system measurements
    6.
    发明授权
    Methods for improving the accuracy of dimensioning-system measurements 有权

    公开(公告)号：US10775165B2

    公开(公告)日：2020-09-15

    申请号：US14873613

    申请日：2015-10-02

    Applicant: Hand Held Products, Inc.

    Inventor： Scott McCloskey ,  Ryan Andrew Lloyd ,  Jingquan Li ,  Brian L. Jovanovski

    IPC: G01B11/02 ,  G01B21/02 ,  G01B21/04 ,  G01B11/25 ,  G01B11/00

    Abstract: Methods to improve the accuracy of non-contact measurements of an object's dimensions using a dimensioning system are disclosed. The methods include a method for creating a mathematical model (i.e., error model) based on an observed correlation between errors in an estimated dimension and the characteristics of the measurement used to obtain the estimated dimension. These error models may be created for various dimensions and stored for future use. The methods also include a method for using the stored error models to reduce the error associated with a particular dimensioning-system measurement. Here an error model is used to create an estimated error. The estimated error is then removed from the estimate of the dimension to produce a final estimate of the dimension that is more accurate.

    Method of error correction for 3D imaging device
    7.
    发明授权
    Method of error correction for 3D imaging device 有权

    公开(公告)号：US10228452B2

    公开(公告)日：2019-03-12

    申请号：US13912262

    申请日：2013-06-07

    Applicant: Hand Held Products, Inc.

    Inventor： Brian L. Jovanovski ,  Jingquan Li

    IPC: G01B11/00 ,  G01B11/24 ,  G01S7/497 ,  G01S17/89

    CPC classification number: G01S7/497 ,  G01S17/89

    Abstract: A method is presented for correcting errors in a 3D scanner. Measurement errors in the 3D scanner are determined by scanning each of a plurality of calibration objects in each of a plurality of sectors in the 3D scanner's field of view. The calibration objects have a known height, a known width, and a known length. The measurements taken by the 3D scanner are compared to the known dimensions to derive a measurement error for each dimension in each sector. An estimated measurement error is calculated based on scans of each of the plurality of calibration objects. When scanning target objects in a given sector, the estimated measurement error for that sector is used to correct measurements obtained by the 3D scanner.

    Dual-projector three-dimensional scanner
    10.
    发明授权
    Dual-projector three-dimensional scanner 有权

    公开(公告)号：US09857167B2

    公开(公告)日：2018-01-02

    申请号：US14747490

    申请日：2015-06-23

    Applicant: Hand Held Products, Inc.

    Inventor： Brian L. Jovanovski ,  Jingquan Li

    IPC: H04N1/04 ,  G01B11/25 ,  G02B26/10 ,  H04N5/225

    CPC classification number: G01B11/2518 ,  G01B11/2513 ,  G01B11/2536 ,  G02B26/10 ,  H04N5/225 ,  H04N5/2256 ,  H04N13/254

    Abstract: A current problem with 3D scanners using structured light patterns is choosing a single light pattern to accommodate all possible object/range conditions. Objects far from the 3D scanner often require different patterns than objects that located close to the 3D scanner. In addition, large objects often require different patterns than small objects. To automatically sense and adapt to a wide variety of size/range conditions, the present invention embraces a 3D scanner for dimensioning that has two projectors for projecting two different light patterns. Based on the scanning requirements for a particular object, one of the two projected patterns may be used to obtain information regarding the shape of an object. In one possible embodiment, this shape information is used to obtain the object's dimensions.

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