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GB2642828A - Method and apparatus for estimating a location of a platform - Google Patents

Method and apparatus for estimating a location of a platform

Info

Publication number
GB2642828A
GB2642828A GB2410614.8A GB202410614A GB2642828A GB 2642828 A GB2642828 A GB 2642828A GB 202410614 A GB202410614 A GB 202410614A GB 2642828 A GB2642828 A GB 2642828A
Authority
GB
United Kingdom
Prior art keywords
signature
event
directions
intensity gradient
patch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2410614.8A
Other versions
GB202410614D0 (en
Inventor
Joseph Frank Lowe Antony
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MBDA UK Ltd
Original Assignee
MBDA UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MBDA UK Ltd filed Critical MBDA UK Ltd
Priority to GB2410614.8A priority Critical patent/GB2642828A/en
Publication of GB202410614D0 publication Critical patent/GB202410614D0/en
Priority to PCT/GB2025/051516 priority patent/WO2026017971A1/en
Publication of GB2642828A publication Critical patent/GB2642828A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
    • G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
    • G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
    • G01C21/165—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments
    • G01C21/1656—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation combined with non-inertial navigation instruments with passive imaging devices, e.g. cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D47/00—Equipment not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/30—UAVs specially adapted for particular uses or applications for imaging, photography or videography

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Image Analysis (AREA)

Abstract

Disclosed is a method of estimating the location of an airborne platform 200, the platform having a ground-facing event camera 210 with a field of view. The method steps are: moving the sightline of the camera through a range of directions; recording events triggered during motion of the sightline, each event being a change in intensity recorded at a camera pixel, and associating each event with a ground-referenced position; for each such position within a patch, determining, from the events, a resultant intensity gradient direction; determining a signature for the patch, given by the distribution of the resultant intensity gradient directions for the positions in the patch; and comparing the signature to a signature database to estimate the location of the airborne platform, the database comprising a number of predetermined signatures for patches at known locations. Optionally, the signature is the distribution of the resultant intensity gradient directions amongst a set of intervals of these directions. Each recorded event may include an indication of the magnitude of the intensity change triggering the event. The signature may be a histogram representing the sum of resultant intensity gradient magnitudes in each of a set of intervals of resultant intensity gradient directions.
GB2410614.8A 2024-07-19 2024-07-19 Method and apparatus for estimating a location of a platform Pending GB2642828A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2410614.8A GB2642828A (en) 2024-07-19 2024-07-19 Method and apparatus for estimating a location of a platform
PCT/GB2025/051516 WO2026017971A1 (en) 2024-07-19 2025-07-10 Method and apparatus for estimating a location of a platform

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2410614.8A GB2642828A (en) 2024-07-19 2024-07-19 Method and apparatus for estimating a location of a platform

Publications (2)

Publication Number Publication Date
GB202410614D0 GB202410614D0 (en) 2024-09-04
GB2642828A true GB2642828A (en) 2026-01-28

Family

ID=92542486

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2410614.8A Pending GB2642828A (en) 2024-07-19 2024-07-19 Method and apparatus for estimating a location of a platform

Country Status (1)

Country Link
GB (1) GB2642828A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190155314A1 (en) * 2017-07-06 2019-05-23 Top Flight Technologies, Inc. Navigation system for a drone
US11984034B2 (en) * 2019-09-27 2024-05-14 Intel Corporation Unmanned vehicle positioning, positioning-based methods and devices therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190155314A1 (en) * 2017-07-06 2019-05-23 Top Flight Technologies, Inc. Navigation system for a drone
US11984034B2 (en) * 2019-09-27 2024-05-14 Intel Corporation Unmanned vehicle positioning, positioning-based methods and devices therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
arXiv:2304.09793V2 [cs.CV], 22 Mar 2024, Kunping Huang et al., Event-based Simultaneous Localization and Mapping: A Comprehensive Survey *

Also Published As

Publication number Publication date
GB202410614D0 (en) 2024-09-04

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