ISO/TR 20498-5:2019 PDF
Traditional Chinese medicine — Computerized tongue image analysis system — Part 5: Method of acquisition and expression of tongue colour and tongue coating colour
Traditional Chinese medicine — Computerized tongue image analysis system — Part 5: Method of acquisition and expression of tongue colour and tongue coating colour
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 16
- Дата публикации:
- 10 января 2019 г.
- Издание:
- ISO TR 20498 edition 1 version 1
- ICS:
- 11.040.99
This document describes a method of acquisition of tongue image and expression of tongue colour and coating colour by computerized tongue image analysis system (CTIS). This document does not cover the clinical tongue diagnosis result.
Abstract
Overview
ISO/TR 20498-5:2019 - Traditional Chinese medicine - Computerized tongue image analysis system - Part 5: Method of acquisition and expression of tongue colour and tongue coating colour - defines standardized procedures for acquiring tongue images and expressing tongue body colour and tongue coating colour using a Computerized Tongue Image Analysis System (CTIS). The document focuses on image acquisition, colour calibration, digital representation and expression of colour data in the Lab colour space*. It explicitly does not cover clinical diagnosis outcomes.
Key topics and technical requirements
- Colour space: Recommends use of the Lab* colour space (L* = lightness; a*, b* = chromatic axes) for independent lightness control and interoperability with other colour spaces.
- Device calibration: Two-step calibration required:
- Whiteboard calibration (white balance): photograph a standard whiteboard, compute per-point ΔE deviations and adjust white balance iteratively until average ΔE
Технические детали
- Технический комитет
- ISO/TC 249 - Traditional Chinese medicine
- SKU
- ISO/TR 20498-5:2019
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