Non-destructive testing - Image quality of radiographs - Part 5: Determination of the image unsharpness and basic spatial resolution value using duplex wire-type image quality indicators (ISO 19232-5:2018)

This document specifies a method of determining the total image unsharpness and basic spatial resolution of radiographs and radioscopic images. The IQI with up to 13 wire pairs can be used effectively with tube voltages up to 600 kV. The IQI with more than 13 wire pairs can be used effectively at tube voltages lower than 225 kV. When using source voltages in the megavolt range, it is possible that the results are not be completely satisfactory.

Zerstörungsfreie Prüfung - Bildgüte von Durchstrahlungsaufnahmen - Teil 5: Bestimmung der Bildunschärfezahl mit Doppeldraht-Typ-Bildgüteprüfkörpern (ISO 19232-5:2018)

Dieser Teil von ISO 19232 legt ein Verfahren zur Bestimmung der Gesamtbildunschärfe und Basis-Ortsauflösung von Durchstrahlungs- und Röntgenaufnahmen fest.
Die beschriebene Messvorrichtung kann mit einer Röhrenspannung von bis zu 600 kV effektiv eingesetzt werden. Bei Verwendung von Quellenspannung im Megavolt-Bereich können die Prüfergebnisse nicht vollständig zufriedenstellend sein.

Essais non destructifs - Qualité d'image des radiogrammes - Partie 5: Détermination de l'indice de flou de l'image et de la résolution spatiale de base à l'aide d'indicateurs de qualité d'image duplex à fils (ISO 19232-5:2018)

Le présent document spécifie une méthode de détermination de l'indice de flou total de l'image et de la résolution spatiale de base des radiogrammes et des images radioscopiques. L'IQI avec jusqu'à 13 paires de fils peut être utilisé efficacement avec des tensions de tube pouvant atteindre 600 kV. L'IQI avec plus de 13 paires de fils peut être utilisé efficacement avec des tensions de tube inférieures à 225 kV. En cas d'utilisation de tensions de source dans la plage des mégavolts, les résultats peuvent ne pas être entièrement satisfaisants.

Neporušitvene preiskave - Kakovost radiografske slike - 5. del: Določitev motnosti slike in osnovne prostorske ločljivosti z uporabo dupleksnih žičnih indikatorjev kakovosti slike (ISO 19232-5:2018)

Ta dokument določa metodo za določitev skupne motnosti slike in osnovne prostorske ločljivosti radiografskih in radioskopskih slik. Indikator kakovosti slike (IQI) z največ 13 pari kablov je mogoče učinkovito uporabiti s cevno napetostjo do 600 kV. Indikator kakovosti slike z več kot 13 pari kablov je mogoče učinkovito uporabiti pri cevni napetosti, ki je nižja od 225 kV. Kadar uporabljate napetost izvora v megavoltnem razponu, rezultati morda ne bodo povsem zadovoljivi.

General Information

Status
Published
Publication Date
18-Sep-2018
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
19-Sep-2018
Completion Date
19-Sep-2018

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SLOVENSKI STANDARD
SIST EN ISO 19232-5:2019
01-marec-2019

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VOLNHLQRVQRYQHSURVWRUVNHORþOMLYRVWL]XSRUDERGXSOHNVQLKåLþQLKLQGLNDWRUMHY
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Non-destructive testing - Image quality of radiographs - Part 5: Determination of the

image unsharpness and basic spatial resolution value using duplex wire-type image

quality indicators (ISO 19232-5:2018)
Zerstörungsfreie Prüfung - Bildgüte von Durchstrahlungsaufnahmen - Teil 5:
Bestimmung der Bildunschärfezahl mit Doppeldraht-Typ- Bildgüteprüfkörpern (ISO
19232-5:2018)

Essais non destructifs - Qualité d'image des radiogrammes - Partie 5: Détermination de

l'indice de flou de l'image et de la résolution spatiale de base à l'aide d'indicateurs de

qualité d'image duplex à fils (ISO 19232-5:2018)
Ta slovenski standard je istoveten z: EN ISO 19232-5:2018
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
SIST EN ISO 19232-5:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 19232-5:2019
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SIST EN ISO 19232-5:2019
EN ISO 19232-5
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 19.100 Supersedes EN ISO 19232-5:2013
English Version
Non-destructive testing - Image quality of radiographs -
Part 5: Determination of the image unsharpness and basic
spatial resolution value using duplex wire-type image
quality indicators (ISO 19232-5:2018)

Essais non destructifs - Qualité d'image des Zerstörungsfreie Prüfung - Bildgüte von

radiogrammes - Partie 5: Détermination de l'indice de Durchstrahlungsaufnahmen - Teil 5: Bestimmung der

flou de l'image et de la résolution spatiale de base à Bildunschärfezahl mit Doppeldraht-Typ-

l'aide d'indicateurs de qualité d'image duplex à fils (ISO Bildgüteprüfkörpern (ISO 19232-5:2018)

19232-5:2018)
This European Standard was approved by CEN on 24 August 2018.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 19232-5:2018 E

worldwide for CEN national Members.
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SIST EN ISO 19232-5:2019
EN ISO 19232-5:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 19232-5:2019
EN ISO 19232-5:2018 (E)
European foreword

This document (EN ISO 19232-5:2018) has been prepared by Technical Committee ISO/TC 135 "Non-

destructive testing" in collaboration with Technical Committee CEN/TC 138 “Non-destructive testing”

the secretariat of which is held by AFNOR.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by March 2019, and conflicting national standards shall

be withdrawn at the latest by March 2019.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 19232-5:2013.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 19232-5:2018 has been approved by CEN as EN ISO 19232-5:2018 without any

modification.
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SIST EN ISO 19232-5:2019
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SIST EN ISO 19232-5:2019
INTERNATIONAL ISO
STANDARD 19232-5
Third edition
2018-08
Non-destructive testing — Image
quality of radiographs —
Part 5:
Determination of the image
unsharpness and basic spatial
resolution value using duplex wire-
type image quality indicators
Essais non destructifs — Qualité d'image des radiogrammes —
Partie 5: Détermination de l'indice de flou de l'image et de la
résolution spatiale de base à l'aide d'indicateurs de qualité d'image
duplex à fils
Reference number
ISO 19232-5:2018(E)
ISO 2018
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SIST EN ISO 19232-5:2019
ISO 19232-5:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 19232-5:2019
ISO 19232-5:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Specification of duplex wire-type IQI .............................................................................................................................................. 3

4.1 Dimensions, manufacture, and marking ........................................................................................................................... 3

4.1.1 Dimensions and material .......................................................................................................................................... 3

4.1.2 Manufacture ......................................................................................................................................................................... 4

4.1.3 Marking .................................................................................................................................................................................... 4

4.2 Declaration of conformity.............................................................................................................................................................. 4

5 Use of duplex wire ............................................................................................................................................................................................... 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Visual evaluation ................................................................................................................................................................................... 5

5.3 Evaluation of digital images with profile function ................................................................................................... 5

5.4 Evaluation of digital images with profile function by interpolation ......................................................... 5

5.5 Image quality classes ......................................................................................................................................................................... 6

5.6 Application of duplex wire IQI ................................................................................................................................................... 6

6 High resolution IQI with increased measurement range ........................................................................................... 8

7 Documentation ....................................................................................................................................................................................................10

8 Precision and bias ............................................................................................................................................................................................10

Bibliography .............................................................................................................................................................................................................................11

© ISO 2018 – All rights reserved iii
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SIST EN ISO 19232-5:2019
ISO 19232-5:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing,

Subcommittee SC 5, Radiation methods.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.

This third edition cancels and replaces the second edition (ISO 19232-5:2013), which has been

technically revised. The main changes compared to the previous edition are as follows:

— new high definition duplex IQI;
— extended description of usage;
— extended table with basic spatial resolution and linepairs/mm;

— evaluation of duplex wire-type IQI by visual evaluation and evaluation with profile function in

digital images.
A list of all parts in the ISO 19232 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved
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SIST EN ISO 19232-5:2019
INTERNATIONAL STANDARD ISO 19232-5:2018(E)
Non-destructive testing — Image quality of radiographs —
Part 5:
Determination of the image unsharpness and basic spatial
resolution value using duplex wire-type image quality
indicators
1 Scope

This document specifies a method of determining the total image unsharpness and basic spatial

resolution of radiographs and radioscopic images. The IQI with up to 13 wire pairs can be used

effectively with tube voltages up to 600 kV. The IQI with more than 13 wire pairs can be used effectively

at tube voltages lower than 225 kV. When using source voltages in the megavolt range, it is possible that

the results are not be completely satisfactory.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 5576, Non-destructive testing — Industrial X-ray and gamma-ray radiology — Vocabulary

ISO/IEC 17050-1, Conformity assessment — Supplier’s declaration of conformity — Part 1: General

requirements
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 5576 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at https: //www .electropedia .org/
3.1
duplex wire-type image quality indicator
duplex wire-type IQI

image quality indicator specifically designed to assess the total image unsharpness and basic spatial

image resolution of a radiograph or a digital image and composed of a series of pairs of wire elements

made of high density metal
3.2
total image unsharpness value

smallest number of the duplex wire pair which is not sufficiently separable and corresponds to wire

diameter plus wire spacing
Note 1 to entry: The corresponding unsharpness values are given in Table 1.
visual 20% 20%
Note 2 to entry: U can be U , U or iU .
T T T T
© ISO 2018 – All rights reserved 1
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SIST EN ISO 19232-5:2019
ISO 19232-5:2018(E)
3.3
total image unsharpness value determined visually
visual

smallest number of the duplex wire pair, which is visually not separable in a film radiograph on a

viewing station or on a monitor image
3.4

total image unsharpness value determined from a profile function in a digital image

20%

smallest number of the duplex wire pair, which is not separable or separable by a profile function with

less than 20 % modulation depth in a linearized profile
3.5
interpolated total image unsharpness value
20%

smallest number of the duplex wire pair which is separable, determined from a profile function in a

digital image by interpolation from a linearized profile function and obtained by interpolation to 20 %

modulation depth from neighbour element modulations
3.6
basic spatial resolution

smallest geometrical detail which can be resolved and half of the measured unsharpness in a digital

image or radiograph
image detector
Note 1 to entry: SR can be SR or SR .
b b b
3.7
basic spatial detector resolution value
detector

smallest geometrical detail, which can be resolved with a digital detector at magnification equal to one

visual 20%

and corresponds to half of the measured detector unsharpness, U or U , in a digital image and

T T

corresponds to the effective pixel size and is determined from the smallest number of the duplex wire

pair, which is not separable by visual inspection or from the smallest number of the duplex wire pair

with less than 20 % modulation depth in a linearized profile, measured with the IQI on the detector

without object

Note 1 to entry: For this measurement, the duplex wire IQI is placed directly on the digital detector array or

imaging plate.
3.8
basic spatial image resolution value
image

smallest geometrical detail, which can be resolved in a digital image at magnification >1 and corresponds

visual 20%

to half of the measured image unsharpness, U or U , in a digital image and corresponds to the

T T

effective pixel size of the magnified image and is determined from the smallest number of the duplex

wire pair, which is not separable by visual inspection or from the smallest number of the duplex wire

pair with less than 20 % modulation depth in a linearized profile
3.9
interpolated basic spatial image resolution value
image
iSR

smallest geometrical detail, which can be resolved in a digital image at magnification >1 and

20%

corresponds to half of the measured image unsharpness, iU , in a digital image and corresponds to

the interpolated effective pixel size of the magn
...

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