公开(公告)号：US20230213684A1

公开(公告)日：2023-07-06

申请号：US18148476

申请日：2022-12-30

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Tianxu Zhang ,  Yongjun JIA ,  Chunlong WANG ,  Yuehuan WANG ,  Xiuchang GU ,  Kechao WANG ,  Wenbing DENG ,  Xin LIU

IPC: G01V8/02 ,  G01V99/00 ,  G06F30/13

CPC classification number: G01V8/02 ,  G01V99/005 ,  G06F30/13

Abstract: Methods and systems are provided for inverted detection and positioning of a strip-like subterranean tunnel in a mountain mass, pertaining to the field combining theories of the discipline of geophysics and remote sensing technology. The method includes: using a model of thermal radiation between a mountain mass and an air layer in conjunction with DEM data to calculate solar radiation energy, and iteratively filtering out background heat flow field energy of the mountain mass; calculating mountain mass background heat propagation energy with reference to hyperspectral data; using a subterranean target inversion model to filter out each layer of background heat flow field energy of the mountain mass in an infrared remote sensing image, and acquiring an optimal elevation of the strip-like subterranean tunnel in the mountain mass and a disturbance signal distribution image constructed via strip-like subterranean tunnel heat flow field energy in each layer of the mountain mass; and using a Hough transform detection method to detect a straight line in the disturbance signal distribution image, performing fitting according to the principle of relevance of tunnel engineering design to acquire a detected location of the tunnel. In this way, inverted detection and positioning of a strip-like subterranean tunnel in a mountain environment is achieved.

公开(公告)号：US20250061247A1

公开(公告)日：2025-02-20

申请号：US18818557

申请日：2024-08-28

Applicant: Huazhong University of Science and Technology

Inventor： Tianxu ZHANG ,  Yongjun JIA ,  Yuehuan WANG ,  Xiuchang GU ,  Wenbing DENG ,  Kechao WANG ,  Xin LIU

IPC: G06F30/23 ,  G06T7/70 ,  G06T17/05 ,  G06V10/44

Abstract: A geologically constrained infrared imaging detection system for an urban street deeply-buried strip-like passage includes an urban hierarchical three-dimensional temperature field model establishing module for establishing an urban hierarchical three-dimensional temperature field model according to urban street digital elevation model (DEM) data and geological data corresponding to urban streets; a total solar radiation energy calculating module for using a total solar radiation energy distribution model to calculate urban surface total solar radiation energy on the basis of the DEM data; an urban stratum geological background heat flux calculating module for calculating urban stratum geological background heat flux via the urban hierarchical three-dimensional temperature field model; an image filtering module; and a perturbation signal processing module.

公开(公告)号：US20230237221A1

公开(公告)日：2023-07-27

申请号：US18159922

申请日：2023-01-26

Applicant: Huazhong University of Science and Technology

Inventor： Tianxu ZHANG ,  Yongjun JIA ,  Yuehuan WANG ,  Xiuchang GU ,  Wenbing DENG ,  Kechao WANG ,  Xin LIU

IPC: G06F30/23 ,  G06T7/70 ,  G06T17/05 ,  G06V10/44

CPC classification number: G06F30/23 ,  G06T7/70 ,  G06T17/05 ,  G06V10/457 ,  G06T2207/10048

Abstract: Provided in the present invention are a geologically constrained infrared imaging detection method and system for an urban deeply-buried strip-like passage, pertaining to the crossing fields of geophysics and remote sensing technology. The method includes: establishing an urban hierarchical three-dimensional temperature field model according to urban street DEM data and geological data corresponding to urban streets; acquiring urban stratum geological background heat flux according to the urban hierarchical three-dimensional temperature field model; using a total solar radiation energy distribution model to calculate urban surface total solar radiation energy; sequentially filtering out the urban surface total solar radiation energy and the urban stratum geological background heat flux from an infrared remote sensing image of a region corresponding to a strip-like underground target, to acquire a perturbation signal image of an urban street deeply-buried strip-like passage; and using grayscale closed-operation plus an edge detection algorithm to perform detection and positioning after preprocessing the perturbation signal image of the urban street deeply-buried strip-like passage, to acquire location information of an urban strip-like underground passage. The present invention achieves inverse detection and positioning of an urban street deeply-buried strip-like passage.