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    METHOD FOR PRESERVING SHAPES IN SOLID MODEL WHEN DISTRIBUTING MATERIAL DURING TOPOLOGICAL OPTIMIZATION WITH DISTANCE FIELDS
    81.
    发明公开
    METHOD FOR PRESERVING SHAPES IN SOLID MODEL WHEN DISTRIBUTING MATERIAL DURING TOPOLOGICAL OPTIMIZATION WITH DISTANCE FIELDS 审中-公开

    公开(公告)号：EP3910602A1

    公开(公告)日：2021-11-17

    申请号：EP21173926.3

    申请日：2021-05-14

    申请人： Dassault Systemes Solidworks Corporation

    发明人： YU, Bowen ,  SAVANT, Shrikant ,  MULE, GIRISH ,  KYEONG HWI, Lee

    IPC分类号： G06T17/10

    摘要： A method preserves shapes in a solid model when distributing material during topological optimization. A 3D geometric model of a part having a boundary shape is received. The geometric model is pre-processed to produce a variable-void distance field and to produce a frozen distance field representing the boundary shape. The geometric model is apportioned into a plurality of voxels, and a density value is adjusted for each voxel according to an optimization process. An iso-surface mesh is extracted from the voxel data, and an iso-surface distance field is generated from the extracted iso-surface mesh. A distance field intersection is derived between the iso-surface distance field and the variable-void distance field. A distance field union is performed between the distance field intersection and the frozen distance field, and a result iso-surface mesh is produced from the distance field union.

    REPRESENTING AN ENVIRONMENT BY CYLINDRICAL AND PLANAR STRUCTURES
    87.
    发明公开
    REPRESENTING AN ENVIRONMENT BY CYLINDRICAL AND PLANAR STRUCTURES 审中-公开

    公开(公告)号：EP3696507A1

    公开(公告)日：2020-08-19

    申请号：EP19156681.9

    申请日：2019-02-12

    申请人： Veoneer Sweden AB

    发明人： BRUNNEGARD, Oliver ,  ERIKSSON, Olof ,  ADERUM, Tobias

    IPC分类号： G01C21/32 ,  G05D1/02 ,  G01C21/30 ,  G06T17/10 ,  G06K9/00

    摘要： The present disclosure relates to a vehicle control system (3) adapted for an ego vehicle (1) travelling on a road (2). The vehicle control system (3) comprises a main control unit (4) and an environment detection sensor arrangement (5) that is adapted to provide an initial detected representation of the environment. The main control unit (4) is arranged to provide a processed representation of the environment by identifying cylindrical structures and planar structures extending along a vertical extension in a coordinate system, and to confer a first identification that corresponds to a cylindrical structure, and a corresponding coordinate in a 2-dimensional projection x-y of the coordinate system 13, for each identified cylindrical structure. The main control unit (4) is further arranged to confer a second identification that corresponds to a planar structure, and a corresponding coordinate in the 2-dimensional projection for each identified planar structure.