ISO 20498-1:2019

Traditional Chinese medicine — Computerized tongue image analysis system — Part 1: General requirements

This document specifies general requirements for a computerized tongue image analysis system (CTIS). This document is limited to the safety aspects and technical requirements for a CTIS, excluding the diagnosis or interpretation of tongue images.

Médecine traditionnelle chinoise — Système d’analyse d’images numérisées de la langue — Partie 1: Exigences générales

General Information

• Status: Published
• Publication Date: 05-Mar-2019
• ICS: 11.040.99 - Other medical equipment
• Technical Committee: ISO/TC 249 - Traditional Chinese medicine
• Drafting Committee: ISO/TC 249/WG 4 - Quality and safety of medical devices other than acupuncture needles
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jan-2024
• Completion Date: 15-Jan-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 20498-1
First edition
2019-03
Corrected version
2019-05
Traditional Chinese medicine —
Computerized tongue image analysis
system —
Part 1:
General requirements
Médecine traditionnelle chinoise — Système d’analyse d’images
numérisées de la langue —
Partie 1: Exigences générales
Reference number
ISO 20498-1:2019(E)
©
ISO 2019

---------------------- Page: 1 ----------------------
ISO 20498-1:2019(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2019
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: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 20498-1:2019(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Components of CTIS . 2
5 Technical requirements . 2
5.1 General . 2
5.2 Tongue positioning . 2
5.3 Lighting part . 2
5.4 Image acquisition part . 3
5.4.1 General. 3
5.4.2 Spatial resolution . 3
5.4.3 Colour components . 3
5.4.4 Colour components acquirement . 4
5.5 Data processing part . 4
5.6 Display . 4
6 Safety . 4
6.1 Sa
...