公开(公告)号：US20160054133A1

公开(公告)日：2016-02-25

申请号：US14783959

申请日：2014-03-21

Applicant: DENSO CORPORATION

Inventor： Nobuhiro MIZUNO ,  Masahiro IIDA

IPC: G01C21/20

CPC classification number: G01C21/20 ,  G01C21/32 ,  G09B29/00

Abstract: A curve-shape modeling device that divides multiple sampling points along a route into a linear section, a relaxation curve section and a steady section, and models a curve shape of the route, includes: a curve extraction unit that extracts a curve from the sampling points based on a curvature of the sampling points; a steady section curvature determination unit that determines a curvature of the steady section based on a curvature of sampling points included in an extracted curve; and a curve entry and exit determination unit that sets a predetermined curvature range including the curvature of the steady section, and determines a start point and an end point of the steady section based on the curvature range.

Abstract translation: 一种曲线形状建模装置，其将沿着路线的多个采样点划分成线性部分，松弛曲线部分和稳定部分，并且对路线的曲线形状进行建模，其包括：从采样中提取曲线的曲线提取单元 基于采样点曲率的点; 稳定截面曲率确定单元，其基于提取的曲线中包括的采样点的曲率来确定稳定部分的曲率; 以及曲线进入和退出确定单元，其设置包括稳定部分的曲率的预定曲率范围，并且基于曲率范围确定稳定部分的起点和终点。

公开(公告)号：US20150354968A1

公开(公告)日：2015-12-10

申请号：US14761655

申请日：2014-01-21

Applicant: DENSO CORPORATION

Inventor： Nobuhiro MIZUNO ,  Masahiro IIDA

IPC: G01C21/20 ,  G01C21/32

CPC classification number: G01C21/20 ,  G01C21/32 ,  G09B29/00 ,  G09B29/106

Abstract: A curve modeling device includes a curvature calculation unit, a curvature correction unit, and a node information generation unit. The curvature calculation unit calculates a curvature of each sampling point on a route based on location information of each sampling point. The curvature correction unit corrects the curvature at each sampling point and approximates the route by a straight line interval, an arc interval, or a smooth curve interval. The node information generation unit builds a shape model of a curve included in the route by generating node information indicative of a node location on a road corresponding to the route based on the corrected curvature of the sampling point. The curvature correction unit corrects the curvature under a condition that an orientation difference defined by the calculated curvatures maintains a constant value.

Abstract translation: 曲线建模装置包括曲率计算单元，曲率校正单元和节点信息生成单元。 曲率计算单元基于每个采样点的位置信息来计算路线上每个采样点的曲率。 曲率校正单元校正每个采样点处的曲率，并以直线间隔，圆弧间隔或平滑曲线间隔逼近路线。 节点信息生成单元通过基于采样点的校正曲率生成表示与路线对应的道路上的节点位置的节点信息，构成路径中包含的曲线的形状模型。 曲率校正单元在由计算出的曲率定义的取向差保持恒定值的条件下校正曲率。