ISO 20498-1:2019 伝統的な漢方薬—コンピューター化された舌画像分析システム—パート1：一般的な要件 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 249, Traditional Chinese medicine.

A list of all parts in the ISO 20498 series can be found on the ISO website.

This corrected version of ISO 20498-1:2019 incorporates the following corrections:

— edition date in the running header changed to 2019;

— copyright date in the footer changed to 2019.

Introduction

The tongue’s colour, form, motion, substance and coating are the main factors to be considered when analysing tongue features. Measuring the geometric shape involves observing the changes in the thickness and size of a tongue and the cracks and teeth marks on its surface. The important features of the tongue coating which cover the surface of the tongue are colour, degree of wetness, thickness, form and distribution.

Although tongue diagnosis is convenient and non-invasive, it is difficult to achieve an objective and standardized examination. Differences in inspection circumstances, such as light source or a client’s posture, affect the result significantly. Moreover, as the diagnosis relies on the observer’s experience and knowledge, it is hard to obtain a standardized result. Recently, many research projects have attempted to solve these problems, and various types of computerized tongue image analysis system (CTIS) have been developed.

Various cameras, such as a commercial digital camera, bayer charge-coupled device (CCD) camera, high-performance 3CCD camera and a hyperspectral camera, were used for the CTIS. Recently, a multi-view CTIS has been developed designed for 3D tongue modelling and sublingual vein acquirement, comprising 3D CTIS.

Different CTIS technologies have unique advantages and specificities according to the application and diagnostic environment, but this variation may cause inconsistent diagnoses in practical clinical application. To improve CTIS performance and clinical approach, it has become necessary to develop an International Standard for the functions and elements of a CTIS.

1 Scope

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.

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 for this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

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

Bibliography