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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12046133 B1

PDFFull Text
Date of Patent:
Jul. 23, 2024

Filed:

Dec. 16, 2021

Detection method of key road-sections based on ricci flow

Applicants:

Central South University, Changsha, CN;

Chongqing Geomatics and Remote Sensing Center, Chongqing, CN;

Inventors:

Haifeng Li, Changsha, CN;

Jian Peng, Changsha, CN;

Penglong Li, Changsha, CN;

Zezhong Ma, Changsha, CN;

Yi Ding, Changsha, CN;

Zelie Zhang, Changsha, CN;

Ding Luo, Changsha, CN;

Jiawei Zhu, Changsha, CN;

Silu He, Changsha, CN;

Yan Li, Changsha, CN;

Zhenqi Cui, Changsha, CN;

He Xiao, Changsha, CN;

Ying Ao, Changsha, CN;

Tao Zhang, Changsha, CN;

Assignees:

CENTRAL SOUTH UNIVERSITY, Changsha, CN;

CHONGQING GEOMATICS AND REMOTE SENSING CENTER, Chongqing, CN;

Attorney:

Zhigang Ma

Primary Examiner:

Hunter B Lonsberry

Assistant Examiner:

Helen undefined Li

Int. Cl.
CPC ...
G08G 1/01 (2006.01);
U.S. Cl.
CPC ...
G08G 1/0129 (2013.01); G08G 1/0133 (2013.01); G08G 1/0145 (2013.01);
Abstract

A detection method of key road-sections based on Ricci flow is provided and includes: building a weighted road network according to static road network data and actual traffic flow data; calculating initial values of Olivier Ricci curvature at different times; obtaining a weight system of making edges of the weighted road network be with a same value of Olivier Ricci curvature by a Ricci flow iterative process; and calculating direction and degree of weight change of each of the edges corresponding to road-sections, and setting a threshold to extract key road-sections. The method solves problems that the existing methods analyze the key road-sections from the topological structure of the road network without fully considering the actual distribution and transmission characteristics of the traffic flow in the network, is simple and easy; and the detection result more meet the traffic distribution and the flow of the actual road-sections.

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Li, Haifeng. (2024). Detection method of key road-sections based on ricci flow (U.S. Patent No. 12046133). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12046133

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