ISO/TS 20498-4:2020
(Main)Traditional Chinese medicine — Computerized tongue image analysis system — Part 4: Peripheral visual instruments
Traditional Chinese medicine — Computerized tongue image analysis system — Part 4: Peripheral visual instruments
This document specifies the performance criteria of peripheral visual instruments in the computerized tongue image analysis system (CTIS), including colour reproduction, distortion and resolution.
Médecine traditionnelle chinoise — Système d’analyse d’images numérisées de la langue — Partie 4: Instruments visuels périphériques
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TECHNICAL ISO/TS
SPECIFICATION 20498-4
First edition
2020-10
Traditional Chinese medicine —
Computerized tongue image analysis
system —
Part 4:
Peripheral visual instruments
Médecine traditionnelle chinoise — Système d’analyse d’images
numérisées de la langue —
Partie 4: Instruments visuels périphériques
Reference number
ISO/TS 20498-4:2020(E)
©
ISO 2020
---------------------- Page: 1 ----------------------
ISO/TS 20498-4:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/TS 20498-4:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Performance . 2
4.1 Colour reproduction . 2
4.2 Display resolution . 2
4.3 Distortion . 2
4.4 Viewing environment . 3
Annex A (informative) sRGB values of colour chart . 5
Bibliography . 6
© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/TS 20498-4:2020(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 developmen
...
TECHNICAL ISO/TS
SPECIFICATION 20498-4
First edition
2020-10
Traditional Chinese medicine —
Computerized tongue image analysis
system —
Part 4:
Peripheral visual instruments
Médecine traditionnelle chinoise — Système d’analyse d’images
numérisées de la langue —
Partie 4: Instruments visuels périphériques
Reference number
ISO/TS 20498-4:2020(E)
©
ISO 2020
---------------------- Page: 1 ----------------------
ISO/TS 20498-4:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/TS 20498-4:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Performance . 2
4.1 Colour reproduction . 2
4.2 Display resolution . 2
4.3 Distortion . 2
4.4 Viewing environment . 3
Annex A (informative) sRGB values of colour chart . 5
Bibliography . 6
© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/TS 20498-4:2020(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 developmen
...
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