ISO 20498-1:2019

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

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ISO 20498-1:2019(E)

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ii © ISO 2019 – All rights reserved

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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
...