FR3119462B1 - Method for acquiring 3D images by line scanning and temporal gate detection - Google Patents

Method for acquiring 3D images by line scanning and temporal gate detection Download PDF

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Publication number
FR3119462B1
FR3119462B1 FR2100958A FR2100958A FR3119462B1 FR 3119462 B1 FR3119462 B1 FR 3119462B1 FR 2100958 A FR2100958 A FR 2100958A FR 2100958 A FR2100958 A FR 2100958A FR 3119462 B1 FR3119462 B1 FR 3119462B1
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FR
France
Prior art keywords
sensors
emission
acquiring
images
line scanning
Prior art date
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Active
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FR2100958A
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French (fr)
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FR3119462A1 (en
Inventor
Frédéric Chiquet
Patrick Maine
Philippe Metivier
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Keopsys Ind
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Keopsys Ind
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Publication date
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Priority to FR2100958A priority Critical patent/FR3119462B1/en
Priority to PCT/FR2022/050184 priority patent/WO2022162328A1/en
Publication of FR3119462A1 publication Critical patent/FR3119462A1/en
Application granted granted Critical
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
    • G01S17/18—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein range gates are used
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • G01S7/4861—Circuits for detection, sampling, integration or read-out
    • G01S7/4863—Detector arrays, e.g. charge-transfer gates

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

La présente invention concerne un procédé d’acquisition d’images tridimensionnelles d’une zone comprenant les étapes suivantes : émission Ei, au moyen d’un dispositif d’émission d’un faisceau lumineux éclairant des régions Ri de la zone ; suite à l’émission Ei : activation Ai,j successives de sous-ensemble de capteurs Ci,j, les capteurs appartenant à une matrice de capteurs photosensibles, de manière à détecter un flux lumineux rétrodiffusé par des objets situés dans la région Ri lorsque la région Ri est éclairée par le faisceau lumineux ; traitement par une unité de traitement, des flux lumineux détectés par la matrice de capteurs photosensibles de manière à mesurer la distance entre les objets détectés par chaque sous-ensemble de capteurs, un objet détecté par un sous-ensemble Ci,j activé à un instant tj après l’émission Ei étant située à une distance Di,j correspondante qui est fonction de la durée entre l’émission Ei et l’instant tj. Figure pour l’abrégé : figure 1The present invention relates to a method for acquiring three-dimensional images of an area comprising the following steps: emission Ei, by means of a device for emitting a light beam illuminating regions Ri of the area; following emission Ei: successive activation Ai,j of subsets of sensors Ci,j, the sensors belonging to a matrix of photosensitive sensors, so as to detect a luminous flux backscattered by objects located in the region Ri when the region Ri is illuminated by the light beam; processing by a processing unit, of the light fluxes detected by the matrix of photosensitive sensors so as to measure the distance between the objects detected by each subset of sensors, an object detected by a subset Ci,j activated at a time tj after the emission Ei being located at a corresponding distance Di,j which is a function of the duration between the emission Ei and the instant tj. Figure for the abstract: Figure 1

FR2100958A 2021-02-01 2021-02-01 Method for acquiring 3D images by line scanning and temporal gate detection Active FR3119462B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR2100958A FR3119462B1 (en) 2021-02-01 2021-02-01 Method for acquiring 3D images by line scanning and temporal gate detection
PCT/FR2022/050184 WO2022162328A1 (en) 2021-02-01 2022-02-01 Method for acquiring 3d images by line scanning and time-gate detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2100958 2021-02-01
FR2100958A FR3119462B1 (en) 2021-02-01 2021-02-01 Method for acquiring 3D images by line scanning and temporal gate detection

Publications (2)

Publication Number Publication Date
FR3119462A1 FR3119462A1 (en) 2022-08-05
FR3119462B1 true FR3119462B1 (en) 2023-04-28

Family

ID=74860268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2100958A Active FR3119462B1 (en) 2021-02-01 2021-02-01 Method for acquiring 3D images by line scanning and temporal gate detection

Country Status (2)

Country Link
FR (1) FR3119462B1 (en)
WO (1) WO2022162328A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5081530A (en) 1987-06-26 1992-01-14 Antonio Medina Three dimensional camera and range finder
US4854698A (en) * 1987-10-05 1989-08-08 Robotic Vision Systems, Inc. 3-D measurement via multiple gating
WO2008152647A2 (en) * 2007-06-15 2008-12-18 Ben Gurion University Of The Negev Research And Development Authority Three-dimensional imaging method and apparatus
US8548270B2 (en) * 2010-10-04 2013-10-01 Microsoft Corporation Time-of-flight depth imaging
US20190056498A1 (en) * 2016-03-01 2019-02-21 Brightway Vision Ltd. Gated imaging apparatus, system and method
US20190285734A1 (en) * 2018-03-14 2019-09-19 Infineon Technologies Ag Detection system with configurable range and field of view
DE102018113848A1 (en) * 2018-06-11 2019-12-12 Sick Ag Optoelectronic sensor and method for acquiring three-dimensional image data
JP2022510817A (en) * 2018-11-20 2022-01-28 センス・フォトニクス，インコーポレイテッド Methods and systems for spatially distributed strobing

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Publication number Publication date
WO2022162328A1 (en) 2022-08-04
FR3119462A1 (en) 2022-08-05

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