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    Depth sensor noise
    243.
    发明授权
    Depth sensor noise 有权

    公开(公告)号：US10586309B2

    公开(公告)日：2020-03-10

    申请号：US15846328

    申请日：2017-12-19

    Applicant: DASSAULT SYSTEMES

    Inventor： Mohamed Amine Ayari ,  Vincent Guitteny

    IPC: G06K9/00 ,  G06T5/00 ,  G06T7/73 ,  G06T7/80 ,  G06N3/08 ,  G06N3/04

    Abstract: Described is a computer-implemented method for learning a function configured for reconstructing, for a class of real objects, a 3D modeled object that represents an instance of the class from a depth map of the instance. The method comprises providing a parametric model of the class, creating a database, and learning the function with the database. The method improves the 3D reconstruction of a real object from a depth map.

    Computer-implemented method of calibrating a camera
    245.
    发明授权
    Computer-implemented method of calibrating a camera 有权

    公开(公告)号：US10510162B2

    公开(公告)日：2019-12-17

    申请号：US15601619

    申请日：2017-05-22

    Applicant: Dassault Systemes

    Inventor： Fivos Doganis

    IPC: H04N5/232 ,  G06T7/80 ,  G06T7/13 ,  G06K9/00 ,  H04N5/445 ,  H04N17/00

    Abstract: A computer-implemented method of calibrating a camera, comprises the steps of: a. acquiring a video stream from said camera (CAM), and displaying it on a screen (DY); b. displaying on the screen, superimposed to the video stream, a representation of a target area (102); c. detecting a calibration pattern (100) in the video stream and periodically check whether it fits within the calibration area; d. when the calibration pattern is found to fit within the calibration area, extracting an image thereof from the video stream; said steps a. to d. being iterated a plurality of times using respective target areas corresponding to different positions of a physical support (101) carrying the calibration pattern; and then e. estimating intrinsic calibration parameters of the camera by processing said images. A computer program product, computer-readable data-storage medium and computer system for carrying out such a method.

    Compressing a signal that represents a physical attribute
    247.
    发明授权
    Compressing a signal that represents a physical attribute 有权

    公开(公告)号：US10410377B2

    公开(公告)日：2019-09-10

    申请号：US15702042

    申请日：2017-09-12

    Applicant: DASSAULT SYSTEMES

    Inventor： Jean-Julien Tuffreau ,  Malika Boulkenafed

    IPC: G06K9/00 ,  G06T9/40 ,  G06T9/00 ,  H04N19/63

    Abstract: The invention notably relates to a computer-implemented method for compressing data representing values of a physical attribute in a predetermined space. The method comprises providing a signal that includes a mapping from leaf cells of a hierarchical subdivision of the predetermined space each onto a respective coefficient representative of a value of the physical attribute at the respective leaf cell. The method also comprises determining a discrete wavelet transform of the signal and encoding the determined discrete wavelet transform. The method provides an improved way to compress a modeled object that represents a real object.

    Flow-induced noise source contribution
    248.
    发明授权
    Flow-induced noise source contribution 有权

    公开(公告)号：US10386212B2

    公开(公告)日：2019-08-20

    申请号：US15189609

    申请日：2016-06-22

    Applicant: Dassault Systemes Simulia Corp.

    Inventor： Adrien Mann ,  Franck Léon Pérot

    IPC: G01F1/32 ,  G06F17/50 ,  G10K11/16

    Abstract: A system and method for simulating activity of a fluid in a volume that represents a physical space, the activity of the fluid in the volume being simulated so as to model movement of elements within the volume. The method includes at a first time, identifying a first set of vortices in a transient and turbulent flow. The method includes at a second time that is subsequent to the first time, identifying a second set of vortices. The method includes tracking changes in the vortices by comparing the first set and the second set of discrete vortices. The method includes identifying one or more noise sources based on the tracking. The method includes determining the contribution of one or more noise sources at a receiver. The method also includes outputting data indicating one or more modifications to one or more geometric features of a device or an entity.

    Computer-implemented method for designing a garment or upholstery by defining sequences of assembly tasks
    249.
    发明授权
    Computer-implemented method for designing a garment or upholstery by defining sequences of assembly tasks 有权

    公开(公告)号：US10376008B2

    公开(公告)日：2019-08-13

    申请号：US15631840

    申请日：2017-06-23

    Applicant: Dassault Systemes

    Inventor： Denis Nouais ,  Auxkin Ortuzar Del Castillo ,  Cyril Ngo Ngoc

    IPC: A41H3/00 ,  G06F17/50 ,  G06T17/20 ,  G06T19/00

    Abstract: A computer-implemented method for designing a virtual garment or upholstery in a three-dimensional scene comprising the steps of: a) providing a three-dimensional manikin, a set of pattern parts of said virtual garment or upholstery and a set of seam specification; b) receiving from a user a plurality of declarations of assembly tasks (A, B, C, D1, D2, E1, E21, E22, F2) for assembling the garment or upholstery; c) receiving from the user at least a declaration of a partial ordering relationship between two or more of said assembly tasks; d) executing said tasks according to said partial ordering relationship, each task changing a state of the garment or upholstery under assembly; characterized in that it further comprises a step of: e) while executing the tasks, generating a tree data structure comprising nodes linked by directed arcs, each node being associated to a state of the garment or upholstery and each arc being associated to an assembly task. A computer program product, non-volatile computer-readable data-storage medium and Computer Aided Design system for carrying out such a method. Application of the method to the manufacturing of a garment or upholstery.

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