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FR3080700B1 - METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART - Google Patents

METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART Download PDF

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Publication number
FR3080700B1
FR3080700B1 FR1853648A FR1853648A FR3080700B1 FR 3080700 B1 FR3080700 B1 FR 3080700B1 FR 1853648 A FR1853648 A FR 1853648A FR 1853648 A FR1853648 A FR 1853648A FR 3080700 B1 FR3080700 B1 FR 3080700B1
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France
Prior art keywords
volume
uncertainties
modeling
projections
model
Prior art date
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FR1853648A
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French (fr)
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FR3080700A1 (en
Inventor
Camille Jocelyn Roger Chapdelaine
Estelle Parra
Ali Mohammad-Djafari
Nicolas Gac
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.)
Centre National de la Recherche Scientifique CNRS
Safran SA
Original Assignee
Centre National de la Recherche Scientifique CNRS
Safran SA
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Priority to FR1853648A priority Critical patent/FR3080700B1/en
Publication of FR3080700A1 publication Critical patent/FR3080700A1/en
Application granted granted Critical
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/424—Iterative

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

L'invention concerne un procédé de contrôle non-destructif d'une pièce comprenant : - l'acquisition de projections tomographiques du volume de la pièce, - une première reconstruction virtuelle du volume de la pièce sur la base des projections du volume de la pièce, - une deuxième reconstruction virtuelle du volume de la pièce s'appuyant sur les projections du volume, la première reconstruction virtuelle du volume de la pièce et une modélisation du volume de la pièce par un modèle a priori. Le dispositif se caractérise par le fait que la deuxième reconstruction virtuelle du volume de la pièce repose également sur : - la séparation des incertitudes sur les projections entre des incertitudes de modèle (ξ) et des incertitudes de mesure (ε ), - la modélisation des incertitudes de modèle par une modélisation parcimonieuse, - la modélisation des incertitudes de mesure par un modèle gaussien.The invention relates to a method for non-destructive testing of a part comprising: - the acquisition of tomographic projections of the volume of the part, - a first virtual reconstruction of the volume of the part on the basis of the projections of the volume of the part , - a second virtual reconstruction of the volume of the part based on the projections of the volume, the first virtual reconstruction of the volume of the part and a modeling of the volume of the part by an a priori model. The device is characterized by the fact that the second virtual reconstruction of the volume of the part is also based on: - the separation of the uncertainties on the projections between model uncertainties (ξ) and measurement uncertainties (ε), - the modeling of model uncertainties by parsimonious modeling, - modeling of measurement uncertainties by a Gaussian model.

FR1853648A 2018-04-26 2018-04-26 METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART Active FR3080700B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1853648A FR3080700B1 (en) 2018-04-26 2018-04-26 METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1853648A FR3080700B1 (en) 2018-04-26 2018-04-26 METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART
FR1853648 2018-04-26

Publications (2)

Publication Number Publication Date
FR3080700A1 FR3080700A1 (en) 2019-11-01
FR3080700B1 true FR3080700B1 (en) 2021-04-02

Family

ID=63294342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1853648A Active FR3080700B1 (en) 2018-04-26 2018-04-26 METHOD AND DEVICE FOR THE NON-DESTRUCTIVE CONTROL OF A PART

Country Status (1)

Country Link
FR (1) FR3080700B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6754298B2 (en) * 2002-02-20 2004-06-22 The Regents Of The University Of Michigan Method for statistically reconstructing images from a plurality of transmission measurements having energy diversity and image reconstructor apparatus utilizing the method
US20080273651A1 (en) * 2007-05-05 2008-11-06 Franz Edward Boas Methods and apparatus for reducing artifacts in computed tomography images
CN101690418B (en) * 2007-05-31 2015-06-03 通用电气公司 Methods and systems to facilitate correcting gain fluctuations in image
WO2012106460A2 (en) * 2011-02-01 2012-08-09 L-3 Communications Security and Detection Systems Inc. Reconstruction method using direct and iterative techniques
EP2689414A4 (en) * 2011-03-24 2014-09-10 Univ Johns Hopkins Model-based processing of image data
EP3361953A4 (en) * 2015-10-16 2019-09-11 Varian Medical Systems, Inc. Iterative image reconstruction in image-guided radiation therapy

Also Published As

Publication number Publication date
FR3080700A1 (en) 2019-11-01

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