公开(公告)号：US20250022222A1

公开(公告)日：2025-01-16

申请号：US18770446

申请日：2024-07-11

Applicant: Tongji University

Inventor： Bin He ,  Gang Li ,  Feng Li ,  Yulong Ding ,  Bin Cheng ,  Zhongpan Zhu ,  Zhipeng Wang

IPC: G06T17/00 ,  G06T5/20 ,  G06T5/70 ,  G06V10/44

Abstract: A method for constructing a structural semantic map under an underground weak-light and low-texture environment is provided. The method includes: fusing traditional methods with a parameter line detection and verification model of structural semantics of a Transformer; and establishing a geometric primitive half-plane search method guided by the direction of structural information. The method also includes establishing a neighborhood greedy expansion algorithm based on a geometric primitive model; and optimizing geometric primitive poses and boundaries one by one. The method further includes fusing a point cloud map with structural information, and establishing a semantic map with geometric structure primitives.

公开(公告)号：US12125142B2

公开(公告)日：2024-10-22

申请号：US17808117

申请日：2022-06-22

Applicant: TONGJI UNIVERSITY

Inventor： Bin He ,  Gang Li ,  Runjie Shen ,  Bin Cheng ,  Zhipeng Wang ,  Ping Lu ,  Zhongpan Zhu ,  Yanmin Zhou ,  Qiqi Zhu

IPC: G06T17/05 ,  B64C39/02 ,  B64U20/87 ,  B64U101/30 ,  G01C21/16 ,  G01S17/86 ,  G01S17/89 ,  G05D1/00 ,  G06T7/73 ,  G06T19/20

CPC classification number: G06T17/05 ,  B64C39/024 ,  B64U20/87 ,  G01C21/165 ,  G01S17/86 ,  G01S17/89 ,  G05D1/106 ,  G06T7/74 ,  G06T7/75 ,  G06T19/20 ,  B64U2101/30 ,  G06T2207/10028 ,  G06T2207/10032 ,  G06T2207/30181 ,  G06T2219/2016

Abstract: The method includes: obtaining point cloud information collected by a depth camera, laser information collected by a lidar, and motion information of an unmanned aerial vehicle (UAV); generating a raster map based on the laser information, and obtaining pose information of the UAV based on the motion information; obtaining a map model through fusing the point cloud information, the raster map, and the pose information by a Bayesian fusion method; and correcting a latest map model by feature matching based on a previous map model.