FR3155342B1 - Procede d’imagerie par visualisation de variations d’un contraste de tavelure - Google Patents

Procede d’imagerie par visualisation de variations d’un contraste de tavelure

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Publication number
FR3155342B1
FR3155342B1 FR2312406A FR2312406A FR3155342B1 FR 3155342 B1 FR3155342 B1 FR 3155342B1 FR 2312406 A FR2312406 A FR 2312406A FR 2312406 A FR2312406 A FR 2312406A FR 3155342 B1 FR3155342 B1 FR 3155342B1
Authority
FR
France
Prior art keywords
speckle contrast
target
image
analyzed
illumination source
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.)
Active
Application number
FR2312406A
Other languages
English (en)
Other versions
FR3155342A1 (fr
Inventor
Xavier Orlik
Aurélien Plyer
Elise Colin
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.)
Office National d'Études et de Recherches Aérospatiales
Original Assignee
Office National d'Études et de Recherches Aérospatiales
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 Office National d'Études et de Recherches Aérospatiales filed Critical Office National d'Études et de Recherches Aérospatiales
Priority to FR2312406A priority Critical patent/FR3155342B1/fr
Priority to PCT/EP2024/081752 priority patent/WO2025103907A1/fr
Priority to CN202480083071.4A priority patent/CN122458900A/zh
Priority to AU2024381213A priority patent/AU2024381213A1/en
Publication of FR3155342A1 publication Critical patent/FR3155342A1/fr
Application granted granted Critical
Publication of FR3155342B1 publication Critical patent/FR3155342B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0075—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/026—Measuring blood flow
    • A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4887—Locating particular structures in or on the body
    • A61B5/489—Blood vessels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7203—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal
    • A61B5/7207—Signal processing specially adapted for physiological signals or for diagnostic purposes for noise prevention, reduction or removal of noise induced by motion artifacts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7221—Determining signal validity, reliability or quality
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7246—Details of waveform analysis using correlation, e.g. template matching or determination of similarity
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7264—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48—Laser speckle optics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233—Special features of optical sensors or probes classified in A61B5/00
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/18—Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
    • A61B2562/185—Optical shielding, e.g. baffles

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Artificial Intelligence (AREA)
  • Signal Processing (AREA)
  • Psychiatry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Cardiology (AREA)
  • Hematology (AREA)
  • Vascular Medicine (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Un procédé d’imagerie par visualisation de variations d’un contraste de tavelure permet de révéler de manière plus fiable des mouvements de parties d’une cible diffusante à analyser (100). Le procédé comprend d’utiliser une cible de référence (101) pour vérifier qu’une source laser d’éclairage qui est utilisée ne subit pas de fluctuations de fonctionnement pendant une exécution du procédé. L’utilisation de la cible de référence permet en outre de connaître un contraste de tavelure maximum que peut générer la source laser d’éclairage. Le procédé peut aussi être poursuivi en construisant une image de variation de contraste de tavelure, en soustrayant chaque valeur de contraste calculée pour la cible à analyser à une valeur moyenne de contraste de tavelure calculée pour la cible de référence. Ainsi, des images de variation de contraste de tavelure qui sont construites en utilisant des sources laser différentes, notamment avec des largeurs spectrales différentes, des optiques différentes de formation d’image et des capteurs d’images différents, et/ou lors de répétitions du procédé qui sont séparées dans le temps, peuvent être comparées entre elles valablement. Pour cela, chaque image de contraste de tavelure de la cible à analyser est corrigée d’une contribution spécifique à la source laser d’éclairage et éventuellement en plus d’une autre contribution due à un bruit de détection d’image.Figure d’abrégé : Figure 1
FR2312406A 2023-11-13 2023-11-13 Procede d’imagerie par visualisation de variations d’un contraste de tavelure Active FR3155342B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR2312406A FR3155342B1 (fr) 2023-11-13 2023-11-13 Procede d’imagerie par visualisation de variations d’un contraste de tavelure
PCT/EP2024/081752 WO2025103907A1 (fr) 2023-11-13 2024-11-08 Procede d'imagerie par visualisation de variations d'un contraste de tavelure
CN202480083071.4A CN122458900A (zh) 2023-11-13 2024-11-08 通过显示散斑对比度的变化进行成像的方法
AU2024381213A AU2024381213A1 (en) 2023-11-13 2024-11-08 Method for imaging by displaying variations in a speckle contrast

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2312406A FR3155342B1 (fr) 2023-11-13 2023-11-13 Procede d’imagerie par visualisation de variations d’un contraste de tavelure
FR2312406 2023-11-13

Publications (2)

Publication Number Publication Date
FR3155342A1 FR3155342A1 (fr) 2025-05-16
FR3155342B1 true FR3155342B1 (fr) 2025-11-28

Family

ID=89767801

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2312406A Active FR3155342B1 (fr) 2023-11-13 2023-11-13 Procede d’imagerie par visualisation de variations d’un contraste de tavelure

Country Status (4)

Country Link
CN (1) CN122458900A (fr)
AU (1) AU2024381213A1 (fr)
FR (1) FR3155342B1 (fr)
WO (1) WO2025103907A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2760338B1 (fr) * 2011-09-26 2018-08-22 The Johns Hopkins University Traitement anisotrope d'images par granularité laser
EP3467483B1 (fr) * 2016-06-02 2023-09-20 The Wave Talk, Inc. Dispositif d'inspection de structure de motif et procédé d'inspection
FR3062542B1 (fr) 2017-02-01 2020-12-25 Office National Detudes Rech Aerospatiales Appareil et procede d'imagerie par contraste de tavelures

Also Published As

Publication number Publication date
FR3155342A1 (fr) 2025-05-16
WO2025103907A1 (fr) 2025-05-22
CN122458900A (zh) 2026-07-24
AU2024381213A1 (en) 2026-05-28

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