Research of Colorimetrical Characteristics of Tongue Color in Tongue Examination
- VernacularTitle:中医舌诊中舌色的色度学特征研究
- Author:
Shuhe ZHANG
;
Aiyin GUO
;
Mei LIU
- Publication Type:Journal Article
- Keywords:
OBJECTIVITY OF TONGUE INSPECTION;
TONGUE COLOR;
COLORIMETRY
- From:
Journal of Guangzhou University of Traditional Chinese Medicine
2000;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
[ Objective]Quantitative characteristics of tongue color is investigated by colorimetrical method to supply evidence for the objectivity of tongue inspection. [Methods] Two hundred and seven tongue pictures with different tongue color were scanned. The values of R (red) , G (green) and B (blue) of different sampling spots in the pictures, as well as their ratios with the total value of R + G + B were observed. Purple-bluish tongue was clustered with the above indexes and then was compared with other common-colored tongue color. [Results] In light white tongue, G ratio was high, R ratio and B ratio low; in red tongue, R ratio was high, G ratio and B ratio low; in purple-bluish tongue, B ratio was higher, G ratio high and R ratio low. The total value of R + G + B was higher in light white tongue, high in purple-bluish tongue and low in red tongue. [Conclusion] There are colorimetrical characteristics in tongue pictures from different monographs of traditional Chinese medicine, but the colorimetric parameters of the tongue pictures should be applied according to clinical cases.
