Computer readable storage medium storing instructions, a system, and method for applying clothoid curve values to roadways in a geographic data information system
Номер патента: EP2252861A2
Опубликовано: 24-11-2010
Автор(ы): James Alan Witmer
Принадлежит: Tele Atlas North America Inc
Опубликовано: 24-11-2010
Автор(ы): James Alan Witmer
Принадлежит: Tele Atlas North America Inc
Реферат: Embodiments of the invention include a computer readable storage medium storing instructions, a system and method for applying clothoid curve values to roadways in a geographic data information system. One embodiment is a computer readable storage medium, storing instructions executable by a processor for applying clothoid curve values to roadways in a geographic data information system, the instructions comprising: selecting database segments in the geographic data information system, wherein the database segments describe roadways; determining segment chains from the selected database segments; preparing the segment chains for transition to curvature space; transitioning to a curvature function in the curvature space, by computing heading change at points along the segment chain, resulting in a transformation of the segment chains into clothoids; smoothing the curvature function; fitting the smoothed curvature function with a more generalized form which remains within a selected tolerance of the smoothed curvature function; and storing identified segments of straight lines, transition zones, and segments of constant curvature in the geographic data information system. Cognates of this embodiment apply for the System and Method embodiments of the invention.
Server, power transfer system, and power transfer method for charging electric vehicles wirelessly along a lane on a road
Номер патента: EP4249315A1. Автор: Tomoya Takahashi,Yuki Takahashi,Hiroki Murata,Tomoyuki Kubota,Daiki Yokoyama,Keisuke Fukuoka,Sachio Toyora,Masato Ehara,Zidan Xu,Wenfeng Liang. Владелец: Toyota Motor Corp. Дата публикации: 2023-09-27.